Update actions/setup-java action to v6

Author: renovate[bot]

.github/workflows/scala.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - name: Set up JDK
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           distribution: 'zulu'
           java-version: 11