chore(deps): update dependency com.google.cloud:google-cloud-spanner to v6.44.0 (#2552)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-spanner](https://github.com/googleapis/java-spanner) | `6.43.2` -> `6.44.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-spanner/6.44.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-spanner/6.44.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-spanner/6.43.2/6.44.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-spanner/6.43.2/6.44.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/java-spanner (com.google.cloud:google-cloud-spanner)</summary>

### [`v6.44.0`](https://github.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#6440-2023-07-27)

##### Features

-   Enable leader aware routing by default. This update contains performance optimisations that will reduce the latency of read/write transactions that originate from a region other than the default leader region. ([55c93ac](https://github.com/googleapis/java-spanner/commit/55c93acfeb8c2a6e5cc2f99ca20d0b72fbe6f8a4))
-   Foreign key on delete cascade ([#&#8203;2340](https://github.com/googleapis/java-spanner/issues/2340)) ([f659105](https://github.com/googleapis/java-spanner/commit/f6591053db1c38f0e13e35cba2087a68d3ab1b01))

##### Bug Fixes

-   Add imports used in sample files. ([#&#8203;2532](https://github.com/googleapis/java-spanner/issues/2532)) ([9a6d3fc](https://github.com/googleapis/java-spanner/commit/9a6d3fcbaa8d44f2e08407252a69beca1e4525b1))

##### Documentation

-   Fixing errors  ([#&#8203;2536](https://github.com/googleapis/java-spanner/issues/2536)) ([8aa407f](https://github.com/googleapis/java-spanner/commit/8aa407f3e1b4c6cf66b679e698992a6a5e3034c0))

##### Dependencies

-   Update dependency com.google.cloud:google-cloud-monitoring to v3.22.0 ([#&#8203;2525](https://github.com/googleapis/java-spanner/issues/2525)) ([be0db6f](https://github.com/googleapis/java-spanner/commit/be0db6f10509fe3e5f74aa6ca6569552e65cb87a))
-   Update dependency com.google.cloud:google-cloud-monitoring to v3.23.0 ([#&#8203;2542](https://github.com/googleapis/java-spanner/issues/2542)) ([67351dd](https://github.com/googleapis/java-spanner/commit/67351dd2cb557d461421c4a0321ae6d2d0fd9dcb))
-   Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.13.1 ([#&#8203;2537](https://github.com/googleapis/java-spanner/issues/2537)) ([9396d8d](https://github.com/googleapis/java-spanner/commit/9396d8d8b5450dd545687af6c513b7f6c7a6c283))
-   Update dependency com.google.cloud:google-cloud-trace to v2.21.0 ([#&#8203;2526](https://github.com/googleapis/java-spanner/issues/2526)) ([2d95234](https://github.com/googleapis/java-spanner/commit/2d952347e0eb7db42387d8abb91d4b11d51cef9c))
-   Update dependency com.google.cloud:google-cloud-trace to v2.22.0 ([#&#8203;2543](https://github.com/googleapis/java-spanner/issues/2543)) ([47c6a43](https://github.com/googleapis/java-spanner/commit/47c6a430405ebf1c2fe392991e3f4554e9ac37aa))
-   Update dependency org.graalvm.sdk:graal-sdk to v22.3.3 ([#&#8203;2533](https://github.com/googleapis/java-spanner/issues/2533)) ([0806b11](https://github.com/googleapis/java-spanner/commit/0806b116cc6650b353cee26c83929e7bcdcb1c34))
-   Update dependency org.junit.vintage:junit-vintage-engine to v5.10.0 ([#&#8203;2539](https://github.com/googleapis/java-spanner/issues/2539)) ([8801b2b](https://github.com/googleapis/java-spanner/commit/8801b2bf639b7903958668a2274a6e5d457de00a))

</details>

---

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Author: renovate-bot

README.md

@@ -42,7 +42,7 @@ If you are using Maven without the BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner</artifactId>
-  <version>6.43.2</version>
+  <version>6.44.0</version>
 </dependency>
 
 ```
@@ -57,13 +57,13 @@ implementation 'com.google.cloud:google-cloud-spanner'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-spanner:6.43.2'
+implementation 'com.google.cloud:google-cloud-spanner:6.44.0'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-spanner" % "6.43.2"
+libraryDependencies += "com.google.cloud" % "google-cloud-spanner" % "6.44.0"
 ```
 <!-- {x-version-update-end} -->
 
@@ -424,7 +424,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-spanner/java11.html
 [stability-image]: https://img.shields.io/badge/stability-stable-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-spanner.svg
-[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-spanner/6.43.2
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-spanner/6.44.0
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
 [auth-scopes]: https://developers.google.com/identity/protocols/oauth2/scopes
 [predefined-iam-roles]: https://cloud.google.com/iam/docs/understanding-roles#predefined_roles

samples/install-without-bom/pom.xml

@@ -32,7 +32,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner</artifactId>
-      <version>6.43.2</version>
+      <version>6.44.0</version>
     </dependency>
     <!-- [END spanner_install_without_bom] -->