chore(deps): update gradle/actions action to v6

Author: renovate[bot]

.github/workflows/gradle-wrapper-validation.yml

@@ -14,4 +14,4 @@ jobs:
     steps:
       - uses: actions/checkout@v6.0.2
 
-      - uses: gradle/actions/wrapper-validation@v5.0.2
+      - uses: gradle/actions/wrapper-validation@v6.0.0