Update actions.

.forgejo/workflows/maven-build.yaml

@@ -3,19 +3,10 @@ jobs:
   maven-build:
     runs-on: docker
     container:
-      image: node:25-trixie
+      image: maven:3.9-eclipse-temurin-25
     steps:
-      - name: Setup Java
-        uses: actions/setup-java@v5
-        with:
-          distribution: 'temurin'
-          java-version: 25
-      - name: Install maven
-        run: |
-          apt-get update
-          apt-get install -y maven
-      - name: Checkout repository
-        uses: actions/checkout@v6
+      - name: Checkout repo
+        uses: https://gittr.ch/linux/forgejo-actions/checkout@v0.1
       - name: Run maven build
         run: mvn clean install -DskipTests=true -Dmaven.javadoc.skip=true -B -V
       - name: Run tests