Bump codecov/codecov-action from 5.4.2 to 6.0.0

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.4.2 to 6.0.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@ad3126e...57e3a13)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -36,4 +36,4 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: ${{ matrix.update-coverage }}
-        uses: codecov/codecov-action@ad3126e916f78f00edff4ed0317cf185271ccc2d #v5.4.2
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 #v6.0.0