deps: update googleapis/java-cloud-bom digest to fc4869e

Author: renovate-bot

.github/workflows/ci.yaml

@@ -330,7 +330,7 @@ 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@93740d54e9e5dc9b83972ab8209c239acb993f48
+      uses: googleapis/java-cloud-bom/tests/validate-bom@fc4869e8db241b43712fcef193764f12c3e4e877
       with:
         bom-path: gapic-generator-java-bom/pom.xml