chore(deps): update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/deploy-docs.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
           # 如果你文档需要 Git 子模块，取消注释下一行

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
           # 如果你文档需要 Git 子模块，取消注释下一行