Bump proto-google-common-protos from 2.9.4 to 2.9.6 (#4813)

Bumps [proto-google-common-protos](https://github.com/googleapis/java-iam) from 2.9.4 to 2.9.6.
- [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-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

dependencyManagement/build.gradle.kts

@@ -76,7 +76,7 @@ val DEPENDENCY_SETS = listOf(
 
 val DEPENDENCIES = listOf(
   "com.github.stefanbirkner:system-rules:1.19.0",
-  "com.google.api.grpc:proto-google-common-protos:2.9.4",
+  "com.google.api.grpc:proto-google-common-protos:2.9.6",
   "com.google.code.findbugs:jsr305:3.0.2",
   "com.google.guava:guava-beta-checker:1.0",
   "com.lmax:disruptor:3.4.4",