Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/c.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: install prerequisites
       run: |
         sudo apt-get update
@@ -50,7 +50,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: install prerequisites
       run: brew install asciidoc gettext ncurses
     - name: configure
@@ -76,7 +76,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: install cross compilation environment
       uses: cyberjunk/gha-ubuntu-cross@v5
       with:

.github/workflows/codeql-analysis.yml

@@ -32,7 +32,7 @@ jobs:
     - uses: Kesin11/actions-timeline@v3
 
     - name: Checkout repository
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.