updated Github workflow

Author: mnordahl

.github/workflows/release.yml

@@ -3,21 +3,22 @@ name: Build and Release Java Application
 on:
   push:
     tags:
-      - "release_*" # Trigger on tags with prefix release_
+      - "release_*"
 
 jobs:
   build_and_release:
-    runs-on: ubuntu-latest # Specifies the runner environment
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3 # Checks out the repository code under $GITHUB_WORKSPACE
+        uses: actions/checkout@v4
 
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: "17"
-          distribution: "temurin" # AdoptOpenJDK builds from Eclipse Foundation
+          java-version: "21"
+          distribution: "temurin"
+          cache: gradle
 
       - name: Set execute permissions for Gradle wrapper
         run: chmod +x ./gradlew