fix docker image version for generated_files_sync

Author: chingor13

.github/workflows/generated_files_sync.yaml

@@ -17,7 +17,7 @@ on:
   pull_request:
 name: generation diff
 env:
-  library_generation_image_tag: 2.67.0
+  library_generation_image_tag: 2.67.1-SNAPSHOT  # {x-version-update:gapic-generator-java:current}
 jobs:
   root-pom:
     # root pom.xml does not have diff from generated one

release-please-config.json

@@ -7,6 +7,7 @@
   "packages": {
     ".": {
       "extra-files": [
+        ".github/workflows/generated_files_sync.yaml",
         ".github/workflows/hermetic_library_generation.yaml",
         "sdk/platform-java/WORKSPACE",
         "sdk/platform-java/.cloudbuild/graalvm/cloudbuild.yaml",