Fix github actions

Author: robertlazarski

.github/workflows/ci.yml

@@ -33,17 +33,17 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Cache Maven Repository
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/.m2/repository
         key: maven-java-${{ matrix.java }}-${{ hashFiles('**/pom.xml') }}
         restore-keys: |
           maven-java-${{ matrix.java }}-
           maven-
     - name: Set up Java
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v4
       with:
         distribution: 'zulu'
         java-version: ${{ matrix.java }}