Build(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](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/action.yml

@@ -10,7 +10,7 @@ jobs:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install uv
         uses: astral-sh/setup-uv@v7
         with:

.github/workflows/changelog.yaml

@@ -20,7 +20,7 @@ jobs:
     name: Check changelog is in dedicated commit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Verify CHANGELOG.md changes are in own commit

.github/workflows/ci-per-commit.yaml

@@ -16,7 +16,7 @@ jobs:
     outputs:
       has_label: ${{ steps.check.outputs.has_label }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Check for label
         id: check
         env:
@@ -35,7 +35,7 @@ jobs:
     if: needs.check-label.outputs.has_label == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Install uv

.github/workflows/pr-hygiene.yaml

@@ -12,7 +12,7 @@ jobs:
     name: Check PR size
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Download script
@@ -29,7 +29,7 @@ jobs:
     name: Check commit messages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Download scripts

.github/workflows/shellcheck.yml

@@ -9,7 +9,7 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install shellcheck
         run: sudo apt-get install -y shellcheck
       - name: Run shellcheck