upgrades actions/upload-artifact@v4 in build.yml

Author: ivangsa

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
           echo "branches = ${{ steps.jacoco.outputs.branches }}"
 
       - name: Upload JaCoCo coverage report as a workflow artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: jacoco-report
           path: target/site/jacoco/