Bump actions/checkout from 4.1.1 to 4.1.2

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.1...v4.1.2)

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

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

.github/workflows/test.yml

@@ -45,15 +45,15 @@ jobs:
       ${{ matrix.neovim && 'Neovim' || 'Vim' }}
       ${{ matrix.version }}
     steps:
-      - uses: actions/[email protected].1
+      - uses: actions/[email protected].2
       - name: Setup Vim
         uses: rhysd/[email protected]
         id: vim
         with:
           neovim: ${{ matrix.neovim }}
           version: ${{ matrix.version }}
       - name: Setup vim-themis
-        uses: actions/[email protected].1
+        uses: actions/[email protected].2
         with:
           repository: thinca/vim-themis
           path: vim-themis