Update actions/setup-java action to v4

Author: renovate[bot]

.github/workflows/javadocs.yml

@@ -25,7 +25,7 @@ jobs:
       run: git clone https://github.com/TheBusyBiscuit/Slimefun4
 
     - name: Set up Java 17 JDK
-      uses: actions/setup-java@v3.11.0
+      uses: actions/setup-java@v4.2.0
       with:
         distribution: 'adopt'
         java-version: '17'