Bump codecov/codecov-action from 5.1.2 to 5.3.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.1.2 to 5.3.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@1e68e06...13ce06b)

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

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

Author: dependabot[bot]

.github/workflows/unit_tests.yml

@@ -25,7 +25,7 @@ jobs:
     - name: "Unit Tests"
       run: go test -coverprofile=coveragetxt -race ./...
     - name: Upload to codecov.io
-      uses: codecov/codecov-action@1e68e06f1dbfde0e4cefc87efeba9e4643565303
+      uses: codecov/codecov-action@13ce06bfc6bbe3ecf90edbbf1bc32fe5978ca1d3
       if: github.event_name == 'push'
       with:
         file: ./coveragetxt