Bump codecov/codecov-action from 1.5.0 to 2.1.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 1.5.0 to 2.1.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/master/CHANGELOG.md)
- [Commits](codecov/codecov-action@v1.5.0...v2.1.0)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/pypi_publish.yml

@@ -39,7 +39,7 @@ jobs:
         coverage report -m
         coverage xml
     - name: Codecov
-      uses: codecov/codecov-action@v1.5.0
+      uses: codecov/codecov-action@v2.1.0
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         env_vars: OS,PYTHON

.github/workflows/python-package.yml

@@ -44,7 +44,7 @@ jobs:
         coverage report -m
         coverage xml
     - name: Codecov
-      uses: codecov/codecov-action@v1.5.0
+      uses: codecov/codecov-action@v2.1.0
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         env_vars: OS,PYTHON