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] <support@github.com>

Author: dependabot[bot]

.github/workflows/PR-test.yml

@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: 检出代码
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 测试构建情况
         run: |
@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: 检出代码
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 创建测试文件
         shell: powershell

.github/workflows/build-on-Linux-x64.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: 检出代码
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: 构建
       run: |

.github/workflows/build-on-Windows.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
 
     - name: 检出代码
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: 安装 GCC
       uses: msys2/setup-msys2@v2

.github/workflows/build-on-macOS.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: 检出代码
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: 检查编译器版本
       run: |
@@ -52,7 +52,7 @@ jobs:
 
     steps:
     - name: 检出代码
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: 检查编译器版本
       run: |

.github/workflows/pkg-deb.yml

@@ -30,7 +30,7 @@ jobs:
 
     steps:
     - name: 检出代码
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         ref: gh-build