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

Author: renovate[bot]

.github/workflows/deploy-docs.yml

@@ -23,7 +23,7 @@ jobs:
           java-version: '23'
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@ed408507eac070d1f99cc633dbcf757c94c7933a # v4
+        uses: gradle/actions/setup-gradle@0f4528296b4bc09e8ae0fc7be30185a4ab435545 # v6
         with:
           gradle-version: "8.12"