Add workaround for a possible bug of cc-test-reporter

codeclimate/test-reporter#495 (comment)

Author: manicmaniac

.github/workflows/test.yml

@@ -27,7 +27,9 @@ jobs:
       - run: bundle exec rake
       - name: Format coverage
         run: |
-          ./cc-test-reporter format-coverage --input-type simplecov --output 'codeclimate-${{ matrix.ruby-version }}.json' coverage/.resultset.json
+          # Workaround for https://github.com/codeclimate/test-reporter/issues/495
+          jq 'map_values(. | map_values(if type=="object" then map_values(.lines) else . end))' coverage/.resultset.json > coverage/workaround.resultset.json
+          ./cc-test-reporter format-coverage --input-type simplecov --output 'codeclimate-${{ matrix.ruby-version }}.json' coverage/workaround.resultset.json
       - uses: actions/upload-artifact@v3
         with:
           name: coverages