Bump actions/checkout from 4.2.0 to 4.2.1

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.2.0...v4.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/cache.yml

@@ -15,7 +15,7 @@ jobs:
           - macos-latest
           - ubuntu-latest
     steps:
-      - uses: actions/[email protected].0
+      - uses: actions/[email protected].1
 
       - name: "Install Nix️"
         uses: cachix/install-nix-action@v30

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/[email protected].0
+      - uses: actions/[email protected].1
 
       - name: "Install Nix️"
         uses: cachix/install-nix-action@v30