fix github actions

Author: nossr50

.github/workflows/maven.yml

@@ -29,19 +29,19 @@ jobs:
 
     # 1. Check out the current working tree
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     # 2. Setup Java 17 JDK (Adopt)
     - name: Java 17 setup
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v4
       with:
         distribution: 'adopt'
         java-package: jdk
         java-version: '17'
 
     # 3. Setup local Maven package cache to speed up building
     - name: Cache Maven packages
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/.m2
         key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}