Bump actions/checkout from 4 to 7 (closes #10)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 7.
- [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/v4...v7)

Change-Id: I8e1ab8344b49a14bf7296f1bdb5d8964e9510810

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Change-Id: Idde5a7c0bb29e80582a67b631d36ec8b865437bb
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 24eb799..fe6aea9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@
       matrix:
         go-version: ['1.24']
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Go ${{ matrix.go-version }}
         uses: actions/setup-go@v6