Update GitHub workflow

Author: dnlblasco

.github/workflows/main.yml

@@ -6,26 +6,24 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Step 1 - Checkout main branch from GitHub 
-        uses: actions/checkout@v4.1.7
-      - name: Step 2 - Set up JDK 17
-        uses: actions/setup-java@v4.2.1
+      - name: Step 1 - Checkout main branch from GitHub
+        uses: actions/checkout@v4
+
+      - name: Step 2 - Set up JDK 21
+        uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'corretto'
+          cache: 'maven'
+
       - name: Step 3 - Build Maven Project
         run: |
           mvn -B package --file pom.xml
           mkdir staging && cp target/*.jar staging
-      - name: Step 4 - Set up a cache for Maven
-        uses: actions/cache@v4.0.2
-        with:
-          path: ~/.m2
-          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
-          restore-keys: ${{ runner.os }}-m2
-      - name: Step 5 - Persist workflow data as artificats
-        uses: actions/upload-artifact@v4.3.4
+
+      - name: Step 4 - Persist workflow data as artifacts
+        uses: actions/upload-artifact@v4
         with:
           name: 'BlueCore'
           path: staging
-          retention-days: 30
+          retention-days: 30