Update to v4 of the upload-artifact action

Signed-off-by: Thomas Neidhart <thomas.neidhart@eclipse-foundation.org>

Author: netomi

.github/workflows/ci.yml

@@ -27,6 +27,6 @@ jobs:
       - name: Build and verify
         run: ./mvnw -ntp clean verify
       - name: Upload artifacts
-        uses: actions/upload-artifact@a8a3f3ad30e3422c9c7b888a15615d19a852ae32 # v3.1.3
+        uses: actions/upload-artifact@v4
         with:
           path: target/macos-notarization-service-*