fix: bump upload-artifact to v4 (redhat-developer#787)

Signed-off-by: Andre Dietisheim <[email protected]>

Author: adietish

.github/workflows/IJ.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Build with Gradle
         run: ./gradlew runPluginVerifier -PideaVersion=IC-2023.2
       - name: Upload report
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: verifier-report