chore(deps): upgrade gapic-generator-java to 2.7.0 and update gax-java to 2.16.0 (#1804)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 446250659

Source-Link: googleapis/googleapis@dc4ef31

Source-Link: https://github.com/googleapis/googleapis-gen/commit/5fdda4ddfbab87998e77e4a453e0ff87986d2db8
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNWZkZGE0ZGRmYmFiODc5OThlNzdlNGE0NTNlMGZmODc5ODZkMmRiOCJ9

chore(bazel): update version of Protobuf to v3.20.1
PiperOrigin-RevId: 444328399

Source-Link: googleapis/googleapis@c7ca416

Source-Link: https://github.com/googleapis/googleapis-gen/commit/d61705453a62b3ecda78aa30c192840ebc5a8a90
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiZDYxNzA1NDUzYTYyYjNlY2RhNzhhYTMwYzE5Mjg0MGViYzVhOGE5MCJ9

feat: AuditConfig for IAM v1
PiperOrigin-RevId: 439356405

Source-Link: googleapis/googleapis@afa2ba1

Source-Link: https://github.com/googleapis/googleapis-gen/commit/3e40c17e1510c95fab58fc2143ccb61cceca5989
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiM2U0MGMxN2UxNTEwYzk1ZmFiNThmYzIxNDNjY2I2MWNjZWNhNTk4OSJ9

Author: gcf-owl-bot[bot]

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -90,6 +90,8 @@
  * <p>For example, to set the total timeout of getDatabase to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * DatabaseAdminSettings.Builder databaseAdminSettingsBuilder = DatabaseAdminSettings.newBuilder();
  * databaseAdminSettingsBuilder
  *     .getDatabaseSettings()

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,6 +28,8 @@
  * <p>Sample for DatabaseAdminClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
  *   DatabaseName name = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
  *   Database response = databaseAdminClient.getDatabase(name);

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/package-info.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -108,6 +108,8 @@
  * <p>For example, to set the total timeout of getDatabase to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * DatabaseAdminStubSettings.Builder databaseAdminSettingsBuilder =
  *     DatabaseAdminStubSettings.newBuilder();
  * databaseAdminSettingsBuilder

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -74,6 +74,8 @@
  * <p>For example, to set the total timeout of getInstanceConfig to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * InstanceAdminSettings.Builder instanceAdminSettingsBuilder = InstanceAdminSettings.newBuilder();
  * instanceAdminSettingsBuilder
  *     .getInstanceConfigSettings()

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -40,6 +40,8 @@
  * <p>Sample for InstanceAdminClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
  *   InstanceConfigName name = InstanceConfigName.of("[PROJECT]", "[INSTANCE_CONFIG]");
  *   InstanceConfig response = instanceAdminClient.getInstanceConfig(name);

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/package-info.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Google LLC
+ * Copyright 2022 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -92,6 +92,8 @@
  * <p>For example, to set the total timeout of getInstanceConfig to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * InstanceAdminStubSettings.Builder instanceAdminSettingsBuilder =
  *     InstanceAdminStubSettings.newBuilder();
  * instanceAdminSettingsBuilder