chore(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/lint.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Run hadolint
         uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5
         # v3.0.0 => 4b5806eb9c6bee4954fc0e0cc3ad6175fc9782c1
@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Setup node
         uses: actions/setup-node@v6
         with:
@@ -48,7 +48,7 @@ jobs:
     if: github.event.pull_request.user.login != 'dependabot[bot]'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Setup packer
         uses: hashicorp/setup-packer@main
         with:
@@ -67,7 +67,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Run shellcheck
         uses: ludeeus/action-shellcheck@00cae500b08a931fb5698e11e79bfbd38e612a38
         # 1.1.0 => 94e0aab03ca135d11a35e5bfc14e6746dc56e7e9
@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Run shfmt
         uses: luizm/action-sh-checker@883217215b11c1fabbf00eb1a9a041f62d74c744
         # v0.5.0 => edd0e45ecff35b05f162052b50df50976c1b74fc
@@ -91,7 +91,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Clone
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Run yamllint
         uses: ibiqlik/action-yamllint@2576378a8e339169678f9939646ee3ee325e845c
         # v3.1.1 => 2576378a8e339169678f9939646ee3ee325e845c