fix coverage error

Author: matthewshirley

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
         env:
           PACT_DART_LIB_DOWNLOAD_PATH: .
       - name: Format coverage
-        run: dart run coverage:format_coverage --lcov --in=coverage --out=coverage.lcov --packages=.packages --report-on=lib
+        run: dart run coverage:format_coverage --lcov --in=coverage --out=coverage.lcov --report-on=lib
       - uses: codecov/codecov-action@v2
         with:
           files: ./coverage.lcov