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]>

.github/workflows/run_tests_matlab.yml

@@ -61,7 +61,7 @@ jobs:
         command: cd(fullfile(getenv('GITHUB_WORKSPACE'), '.github', 'workflows')); run tests_matlab;
 
     - name: Code coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: coverage.xml
         flags: ${{ matrix.os }}_matlab-${{ matrix.version }}

.github/workflows/run_tests_octave.yml

@@ -70,7 +70,7 @@ jobs:
         octave $OCTFLAGS --eval "cd(fullfile(getenv('GITHUB_WORKSPACE'), '.github', 'workflows')); run tests_octave;"
 
     - name: Code coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: coverage.xml
         flags: octave