build(deps): bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...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/init.yml

@@ -16,7 +16,7 @@ jobs:
       GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Rename package
       run: |
         current_date=$(date '+%Y-%m-%d')

.github/workflows/tag_and_publish.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
       with:
         ref: ${{ env.DEFAULT_BRANCH }}
         fetch-depth: 0
@@ -71,7 +71,7 @@ jobs:
     if: false
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Pull latest changes
         run: git pull origin main
       - name: Set up Python 3.10

.github/workflows/test_and_lint.yml

@@ -12,7 +12,7 @@ jobs:
       matrix:
         python-version: [ '3.10', '3.11', '3.12' ]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with: