Bump codecov/codecov-action from 4.6.0 to 5.0.0 (#2386)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4.6.0 to 5.0.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@b9fd7d1...9688725)

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

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

.github/workflows/build.yml

@@ -89,7 +89,7 @@ jobs:
 
     - name: Upload coverage to Codecov
       if: always() && github.event.repository.fork == false
-      uses: codecov/codecov-action@b9fd7d16f6d7d1b5d2bec1a2887e65ceed900238 # v4.6.0
+      uses: codecov/codecov-action@968872560f81e7bdde9272853e65f2507c0eca7c # v5.0.0
       with:
         files: ./artifacts/coverage-reports/Polly.Core.Tests/Cobertura.xml,./artifacts/coverage-reports/Polly.Specs/Cobertura.xml,./artifacts/coverage-reports/Polly.RateLimiting.Tests/Cobertura.xml,./artifacts/coverage-reports/Polly.Extensions.Tests/Cobertura.xml,./artifacts/coverage-reports/Polly.Testing.Tests/Cobertura.xml,
         flags: ${{ matrix.os_name }}