Bump actions/checkout from 3 to 4 (#312)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  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>
Co-authored-by: Roberto Pastor Muela <[email protected]>

.github/workflows/testing-and-deployment.yml

@@ -59,7 +59,7 @@ jobs:
         os: [ubuntu-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -127,7 +127,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build wheels
         uses: pypa/[email protected]
@@ -153,7 +153,7 @@ jobs:
   #   steps:
 
   #     - name: Checkout PyMAPDL
-  #       uses: actions/checkout@v3
+  #       uses: actions/checkout@v4
   #       with:
   #         repository: 'pyansys/pymapdl' #checking out main. Not release