Bump actions/checkout from 4 to 5 (#47)

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

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  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>

Author: dependabot[bot]

.github/workflows/CI_matlab.yml

@@ -29,7 +29,7 @@ jobs:
                 release: ${{ matrix.matlab_version }}
 
         -   name: Checkout repository
-            uses: actions/checkout@v4
+            uses: actions/checkout@v5
 
         -   name: Install Moxunit
             run: git clone https://github.com/MOxUnit/MOxUnit.git --depth 1

.github/workflows/CI_octave.yml

@@ -31,7 +31,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
         -   name: Checkout repository
-            uses: actions/checkout@v4
+            uses: actions/checkout@v5
 
         -   name: Install Moxunit
             run: git clone https://github.com/MOxUnit/MOxUnit.git --depth 1