fix: coverage

Author: woutervanranst

.github/workflows/ci.yml

@@ -55,7 +55,8 @@ jobs:
         reporter: java-junit
 
     - name: Upload Coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         files: "**/coverage.cobertura.xml"
+        token: ${{ secrets.CODECOV_TOKEN }}
         fail_ci_if_error: true