Skip coverage on forks

Author: jacebrowning

.github/workflows/execute-tests.yml

@@ -64,7 +64,7 @@ jobs:
 
       - name: Upload coverage
         uses: codecov/codecov-action@v4
-        if: ${{ inputs.os == 'ubuntu-latest' && matrix.python-version == '3.9' && github.repository == 'doorstop-dev/doorstop' }}
+        if: ${{ inputs.os == 'ubuntu-latest' && matrix.python-version == '3.9' && !github.event.pull_request.head.repo.fork }}
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true