docs: [analyticsadmin] announce the deprecation of first-click, linear, time-decay and position-based attribution models (#9562)

- [ ] Regenerate this pull request now.

feat: update the `default_uri` field of the `WebStreamData` type to be mutable
feat: add the `ads_web_conversion_data_export_scope` field to the `ReportingAttributionModel` type
feat: add `AdsWebConversionDataExportScope` enum to the Admin API v1alpha

PiperOrigin-RevId: 542000614

Source-Link: https://github.com/googleapis/googleapis/commit/c709b9674257860d80f26ce024a5243a69aee342

Source-Link: https://github.com/googleapis/googleapis-gen/commit/6bad798be7908a5cabf84c404b123a4995d290fa
Copy-Tag: eyJwIjoiLmdpdGh1Yi9yZWxlYXNlLW5vdGUtZ2VuZXJhdGlvbi90ZXN0ZGF0YS9qYXZhLWFuYWx5dGljcy1hZG1pbi8uT3dsQm90LnlhbWwiLCJoIjoiNmJhZDc5OGJlNzkwOGE1Y2FiZjg0YzQwNGIxMjNhNDk5NWQyOTBmYSJ9

Author: gcf-owl-bot[bot]

java-analytics-admin/README.md

@@ -23,7 +23,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file:
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>26.16.0</version>
+      <version>26.17.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>