build(deps): bump actions/checkout from 3 to 4 (#271)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: 16.x
@@ -34,7 +34,7 @@ jobs:
     needs: [build]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/download-artifact@v3
         with:
           name: dist

.github/workflows/slash-command-dispatch.yml

@@ -11,7 +11,7 @@ jobs:
       # Checkout is necessary here due to referencing a local action.
       # It's also necessary when using the 'config-from-file' option.
       # Otherwise, avoid using checkout to keep this workflow fast.
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Basic configuration
       - name: Slash Command Dispatch