Update gradle/wrapper-validation-action digest to f9c9c57

Author: renovate[bot]

.github/workflows/maven.yaml

@@ -15,7 +15,7 @@ jobs:
           java-version: '17'
           distribution: 'adopt'
       - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@ccb4328a959376b642e027874838f60f8e596de3
+        uses: gradle/wrapper-validation-action@f9c9c575b8b21b6485636a91ffecd10e558c62f6
       - name: Publish package
         uses: gradle/gradle-build-action@680037c65b998d750280aefaffd22cd3560fc9db
         with: