Bump actions/checkout from 4 to 5

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -26,7 +26,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Go
         uses: actions/setup-go@v5
@@ -60,7 +60,7 @@ jobs:
           - "1.6.3"
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Go
         uses: actions/setup-go@v5

.github/workflows/validate-codeowners.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: "Checkout source code at current commit"
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       # Leave pinned at 0.7.1 until https://github.com/mszostok/codeowners-validator/issues/173 is resolved
     - uses: mszostok/[email protected]
       if: github.event.pull_request.head.repo.full_name == github.repository