chore(deps): update actions/setup-java action to v4.2.1 (#14)

| datasource  | package            | from   | to     |
| ----------- | ------------------ | ------ | ------ |
| github-tags | actions/setup-java | v4.0.0 | v4.2.1 |

Author: stackable-bot

.github/workflows/maven.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
       - name: Set up JDK 11
-        uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # tag=v4.0.0
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # v4.2.1
         with:
           java-version: '11'
           distribution: 'temurin'