Bump codecov/codecov-action from 3.1.4 to 4.0.1 (#3046)

* Bump codecov/codecov-action from 3.1.4 to 4.0.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.4 to 4.0.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3.1.4...v4.0.1)

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

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

* Supply CODECOV_TOKEN as environment variable

Xref https://github.com/codecov/codecov-action/tree/v4.0.1?tab=readme-ov-file#usage

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Wei Ji <[email protected]>

Author: dependabot[bot]

.github/workflows/ci_tests.yaml

@@ -160,8 +160,10 @@ jobs:
 
       # Upload coverage to Codecov
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3.1.4
+        uses: codecov/codecov-action@v4.0.1
         with:
           file: ./coverage.xml # optional
           env_vars: OS,PYTHON,NUMPY
           fail_ci_if_error: false
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}