Merge pull request #8 from OpenZeppelin/renovate/major-github-artifact-actions

Update actions/upload-artifact action to v4

Author: peersky

.github/workflows/megalinter.yml

@@ -99,7 +99,7 @@ jobs:
       # Upload MegaLinter artifacts
       - name: Archive production artifacts
         if: ${{ success() }} || ${{ failure() }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: MegaLinter reports
           path: |