Bump proto-google-common-protos from 1.16.0 to 2.8.0 in /plugins/repository-gcs (#2738)

* Bump proto-google-common-protos in /plugins/repository-gcs

Bumps [proto-google-common-protos](https://github.com/googleapis/java-iam) from 1.16.0 to 2.8.0.
- [Release notes](https://github.com/googleapis/java-iam/releases)
- [Changelog](https://github.com/googleapis/java-iam/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/java-iam/commits)

---
updated-dependencies:
- dependency-name: com.google.api.grpc:proto-google-common-protos
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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* Updating SHAs

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot[bot] <dependabot[bot]@users.noreply.github.com>

plugins/repository-gcs/build.gradle

@@ -64,7 +64,7 @@ dependencies {
   api 'com.google.protobuf:protobuf-java-util:3.19.3'
   api 'com.google.protobuf:protobuf-java:3.19.3'
   api 'com.google.code.gson:gson:2.9.0'
-  api 'com.google.api.grpc:proto-google-common-protos:1.16.0'
+  api 'com.google.api.grpc:proto-google-common-protos:2.8.0'
   api 'com.google.api.grpc:proto-google-iam-v1:0.12.0'
   api 'com.google.cloud:google-cloud-core-http:1.93.3'
   api 'com.google.auth:google-auth-library-credentials:0.20.0'

plugins/repository-gcs/licenses/proto-google-common-protos-1.16.0.jar.sha1

@@ -1 +0,0 @@
-2c5f022ea3b8e8df6a619c4cd8faf9af86022daa

plugins/repository-gcs/licenses/proto-google-common-protos-2.8.0.jar.sha1

@@ -0,0 +1 @@
+8adcbc3c5c3b1b7af1cf1e8a25af26a516d62a4c