ci(deps): 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](https://github.com/actions/checkout/compare/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>

.github/workflows/quality-assurance.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Markdown Lint
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Lint Markdown files
         uses: articulate/actions-markdownlint@v1
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Template Compliance Check
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v6
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Internal File Link Check
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v6