deps: update googleapis/java-cloud-bom digest to 6f63cea

Author: renovate-bot

.github/workflows/ci.yaml

@@ -327,7 +327,7 @@ jobs:
       run: |
         mvn install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
     - name: Validate gapic-generator-java-bom
-      uses: googleapis/java-cloud-bom/tests/validate-bom@3f93d58a049cf6089a930c55cc23ff0c0869a12f
+      uses: googleapis/java-cloud-bom/tests/validate-bom@6f63cea78d392af2b4343baf75045c24c5dfb0da
       with:
         bom-path: gapic-generator-java-bom/pom.xml