Bump actions/checkout from 4 to 5 (#1043)

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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build_linux.yml

@@ -75,7 +75,7 @@ jobs:
       CFLAGS: "-I /usr/local/include"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: provide toolchain
         run: |

.github/workflows/doxygen.yml

@@ -42,7 +42,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 20.x
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install cSpell
         run: npm install -g cspell
       - run: npx cspell --gitignore --config cspell.config.yaml .