chore(deps): update actions/upload-artifact action to v6 (#238)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/test-javascript-stryker.yml

@@ -30,7 +30,7 @@ jobs:
       working-directory: javascript
     - run: npm run stryker
       working-directory: javascript
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       with:
         name: stryker-report
         path: |