chore(deps): bump actions/checkout in the github-actions group (#2525)

Bumps the github-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 5 to 6
- [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/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/pull-request.yml

@@ -11,7 +11,7 @@ jobs:
     env:
       RUSTFLAGS: '-C target-cpu=skylake'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: 'true'
       - name: Install minimal stable with clippy and rustfmt
@@ -39,7 +39,7 @@ jobs:
           - platform: 'web'
           - platform: 'tauri'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: 'true'
 

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       release_version: ${{ steps.get-release-notes.outputs.release_version }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: setup node
         uses: actions/setup-node@v6
       - name: get version
@@ -87,7 +87,7 @@ jobs:
       contents: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: create KOReader plugin zip
         env:
@@ -146,7 +146,7 @@ jobs:
     runs-on: ${{ matrix.config.os }}
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: initialize git submodules
         run: git submodule update --init --recursive

.github/workflows/vercel-merge.yml

@@ -11,7 +11,7 @@ jobs:
   build_and_deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: 'true'
       - uses: amondnet/vercel-action@v25