fixed github actions

Author: martin-kuba

.github/workflows/maven.yml

@@ -5,14 +5,14 @@ on: [push]
 jobs:
   test:
     runs-on: ubuntu-latest
-    name: Java 17 test build
+    name: Java 21 test build
     steps:
     - name: "Check out code"
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: "Set up JDK"
-      uses: actions/setup-java@v4
+      uses: actions/setup-java@v5
       with:
-        java-version: 17
+        java-version: 21
         distribution: "zulu"
         cache: 'maven'
     - name: "Build with Maven"

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
       - name: "set up JDK"
         uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: "zulu"
           cache: 'maven'