build(deps): bump actions/checkout from 4 to 6 in /.github/workflows

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 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/v4...v6)

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

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

.github/workflows/build.yaml

@@ -24,7 +24,7 @@ jobs:
 
         steps:
             - name: Clone repository
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Install build dependencies
               run: sudo apt install -y libluajit-5.1-dev mold

.github/workflows/lint.yaml

@@ -15,7 +15,7 @@ jobs:
 
         steps:
             - name: Clone repository
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Install taplo
               uses: uncenter/setup-taplo@v1
@@ -47,7 +47,7 @@ jobs:
 
         steps:
             - name: Clone repository
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Install build dependencies
               run: sudo apt install -y libluajit-5.1-dev mold