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/gh-pages.yml

@@ -9,7 +9,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: jontze/action-mdbook@6c0be56d14c4bf16861b00af61f50ff7400ce502 # v4
         with:
           token: ${{secrets.GITHUB_TOKEN}}

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
     name: Test building of docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: jontze/action-mdbook@6c0be56d14c4bf16861b00af61f50ff7400ce502 # v4
         with:
           token: ${{secrets.GITHUB_TOKEN}}
@@ -23,14 +23,14 @@ jobs:
   typos:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: crate-ci/typos@v1
 
   code-samples:
     name: Test code samples
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with: