Update Action from v2 to v4 (#23)

Author: Hutch79

.github/workflows/build.yml

@@ -14,11 +14,11 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - name: Step 1 - Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       # Setting up JDK 11
       - name: Step 2 - Setting up JDK 11
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v4
         with:
           distribution: 'zulu'
           java-version: '11'
@@ -39,7 +39,7 @@ jobs:
 
       # Target folder completion
       - name: Step 5 - Copying Files for download
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: Published Jar Files
           path: target/*.jar