chore: update current version in trigger (#3336)

In this PR:
- Setup release please to update version in
`.cloudbuild/library_generation/cloudbuild-library-generation-push-prod.yaml`

Author: JoeWang1127

.cloudbuild/library_generation/cloudbuild-library-generation-push-prod.yaml

@@ -15,7 +15,7 @@
 timeout: 7200s # 2 hours
 substitutions:
   _IMAGE_NAME: "us-docker.pkg.dev/java-hermetic-build-prod/private-resources/java-library-generation"
-  _GAPIC_GENERATOR_JAVA_VERSION: '2.46.2-SNAPSHOT' # {x-version-update:gapic-generator-java:current}
+  _GAPIC_GENERATOR_JAVA_VERSION: '2.49.1-SNAPSHOT' # {x-version-update:gapic-generator-java:current}
   _SHA_IMAGE_ID: "${_IMAGE_NAME}:${COMMIT_SHA}"
   _LATEST_IMAGE_ID: "${_IMAGE_NAME}:latest"
   _VERSIONED_IMAGE_ID: "${_IMAGE_NAME}:${_GAPIC_GENERATOR_JAVA_VERSION}"

release-please-config.json

@@ -11,6 +11,7 @@
         ".cloudbuild/graalvm/cloudbuild-test-a.yaml",
         ".cloudbuild/graalvm/cloudbuild-test-b.yaml",
         ".cloudbuild/library_generation/cloudbuild-library-generation-push.yaml",
+        ".cloudbuild/library_generation/cloudbuild-library-generation-push-prod.yaml",
         ".cloudbuild/library_generation/library_generation.Dockerfile"
       ]
     }