github actions: always run tests even if lints fail

.github/workflows/test.yml

@@ -132,6 +132,7 @@ jobs:
 
       # Run tests last since it's potentially the slowest step.
     - name: 'Check: go test -cover'
+      if: always()
       run: go test -timeout=40s -covermode=count -coverprofile coverage.txt ./...
       # Don't send code coverage if anything failed to reduce spam.
     - uses: codecov/codecov-action@v2