. e Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/dependabot_validation.yml

@@ -14,5 +14,5 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: marocchino/validate-dependabot@v3

.github/workflows/publish_to_pypi.yml

@@ -12,7 +12,7 @@ jobs:
       TWINE_REPOSITORY_URL: https://upload.pypi.org/legacy/
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
           - windows-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: echo "${{ matrix.python-version }}" > .python-version
       - uses: jdx/mise-action@v3
       - run: ./build_and_test.sh

.github/workflows/test_current_release.yml

@@ -26,7 +26,7 @@ jobs:
         os: [macos-latest, ubuntu-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           repository: approvals/ApprovalTests.Python.StarterProject
       - name: Set up Python ${{ matrix.python-version }}

.github/workflows/test_min.yml

@@ -20,7 +20,7 @@ jobs:
         os: [macos-latest, ubuntu-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: echo "${{ matrix.python-version }}" > .python-version
       - uses: jdx/mise-action@v3
       - run: python ./generate_prod_min.py

.github/workflows/tidy_code_and_update_markdown_snippets.yml

@@ -6,7 +6,7 @@ jobs:
   format_and_snippets:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: jdx/mise-action@v3
     - run: ./tidy_code.sh
     - run: ./run_mdsnippets.sh