Revert "temporarily disable codecov workflow until tests are more comprehensive"

This reverts commit 8bef208.

Author: BobDotCom

.github/workflows/python-app.yml

@@ -36,13 +36,13 @@ jobs:
         run: |
           coverage run -m pytest
           coverage xml
-#      - name: Upload code coverage to codecov.io
-#        uses: codecov/codecov-action@v2
-#        with:
-#          #        token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
-#          env_vars: OS,PYTHON
-#          files: ./coverage.xml
-#          flags: pytest # optional
-#          name: codecov-umbrella # optional
-#          fail_ci_if_error: true # optional (default = false)
-#          verbose: true # optional (default = false)
+      - name: Upload code coverage to codecov.io
+        uses: codecov/codecov-action@v2
+        with:
+          #        token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
+          env_vars: OS,PYTHON
+          files: ./coverage.xml
+          flags: pytest # optional
+          name: codecov-umbrella # optional
+          fail_ci_if_error: true # optional (default = false)
+          verbose: true # optional (default = false)