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](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] <[email protected]>

.github/workflows/containers.yml

@@ -41,7 +41,7 @@ jobs:
       - name: Install yaml2json
         run: python3 -m pip install remarshal
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Import from architectures.yml
         id: import
         run: echo "json=$(yaml2json architectures.yml | jq -c .)" >> $GITHUB_OUTPUT
@@ -332,7 +332,7 @@ jobs:
           cache-to: type=inline
           load: true
       - name: Checkout ZMK
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: ${{ env.zmk-repository }}
           ref: ${{ env.zmk-ref }}
@@ -595,7 +595,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Tag
         env:
           TAG: ${{ needs.tags.outputs.major-minor }}
@@ -667,7 +667,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ needs.stable-release-trigger.outputs.stable-tag }}
       - name: Tag