chore(deps): 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] <support@github.com>

Author: dependabot[bot]

.github/workflows/coverage.yml

@@ -7,7 +7,7 @@ jobs:
         runs-on: "ubuntu-24.04"
         name: Coverage
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
               with:
                   fetch-depth: 0
             - name: Install Nix

.github/workflows/gh-pages.yml

@@ -18,7 +18,7 @@ jobs:
         concurrency:
             group: ${{ github.workflow }}
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
               with:
                   fetch-depth: 0
             - uses: cachix/install-nix-action@V27

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
               with:
                   fetch-depth: 0
             - name: Setup Go

.github/workflows/update-vendor-hash.yml

@@ -9,7 +9,7 @@ jobs:
         runs-on: ubuntu-latest
         if: ${{ github.actor == 'renovate[bot]' }}
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
               with:
                   ref: ${{ github.event.pull_request.head.sha }}
                   fetch-depth: 0