Bump codecov/codecov-action from 4 to 5 (#71)

* Bump codecov/codecov-action from 4 to 5

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4 to 5.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v4...v5)

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

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

* `file` -> `files`

---------

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

.github/workflows/CI.yml

@@ -42,10 +42,10 @@ jobs:
           coverage: ${{ matrix.version == '1' && matrix.os == 'ubuntu-latest' }}
       - uses: julia-actions/julia-processcoverage@v1
         if: matrix.version == '1' && matrix.os == 'ubuntu-latest'
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         if: matrix.version == '1' && matrix.os == 'ubuntu-latest'
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true
       - uses: coverallsapp/github-action@master