build(deps): bump actions/checkout from 3 to 4

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](https://github.com/actions/checkout/compare/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>

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
@@ -46,7 +46,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
@@ -69,7 +69,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2

.github/workflows/deploy.yml

@@ -74,7 +74,7 @@ jobs:
           echo "SEND_SLACK_MSG=$SEND_SLACK_MSG" >> $GITHUB_ENV
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       -

.github/workflows/merge.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-22.04
     if: github.repository_owner == 'docker'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: published
       - name: Reset published branch

.github/workflows/validate-upstream.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: docker/docs
       -