Bump actions/checkout from 3 to 4 in /shared (#5)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

shared/eslint.yml

@@ -18,7 +18,7 @@ jobs:
     name: Run eslint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ env.NODE_VERSION }}

shared/github-actions-lint.yml

@@ -12,7 +12,7 @@ jobs:
     name: Run actionlint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-actionlint@v1
         with:
           fail_on_error: true

shared/markdown-lint.yml

@@ -15,7 +15,7 @@ jobs:
     name: Run markdownlint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-markdownlint@v0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}

shared/rubocop.yml

@@ -24,7 +24,7 @@ jobs:
     env:
       BUNDLE_ONLY: ${{ vars.REVIEWDOG_RUBOCOP_BUNDLE_ONLY || 'rubocop' }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ env.RUBY_VERSION }}

shared/yaml-lint.yml

@@ -14,7 +14,7 @@ jobs:
     name: Run yamllint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-yamllint@v1
         with:
           fail_on_error: true