build(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/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](actions/checkout@v5...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] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: xmake-io/github-action-setup-xmake@v1
         # with:
@@ -39,7 +39,7 @@ jobs:
   # clang-format:
   #   runs-on: windows-latest
   #   steps:
-  #     - uses: actions/checkout@v5
+  #     - uses: actions/checkout@v6
 
   #     - run: |
   #         choco install llvm -y --version=17.0.6

.github/workflows/release.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: xmake-io/github-action-setup-xmake@v1
         # with:
@@ -41,7 +41,7 @@ jobs:
       contents: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - id: extract-release-notes
         uses: ffurrer2/extract-release-notes@v2
@@ -59,7 +59,7 @@ jobs:
       contents: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/download-artifact@v6
         with: