build(deps): bump actions/checkout from 5 to 6 (#269)

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] <[email protected]>

Author: dependabot[bot]

.github/workflows/bandit.yml

@@ -16,7 +16,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gardenlinux/python-gardenlinux-lib/.github/actions/setup@main
       - name: Simple bandit security checks
         run: make security

.github/workflows/black.yml

@@ -6,6 +6,6 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gardenlinux/python-gardenlinux-lib/.github/actions/setup@main
       - run: make lint

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gardenlinux/python-gardenlinux-lib/.github/actions/setup@main
       - name: Simple poetry build no package
         run: make build

.github/workflows/docs.yml

@@ -9,7 +9,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gardenlinux/python-gardenlinux-lib/.github/actions/setup@main
       - run: make docs
       - name: Deploy to GitHub Pages

.github/workflows/pytests.yml

@@ -16,7 +16,7 @@ jobs:
         python_version: [ "3.13", "3.14" ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2