ci(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/check.yml

@@ -25,7 +25,7 @@ jobs:
       cancel-in-progress: true
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/deploy.yml

@@ -23,7 +23,7 @@ jobs:
       group: release-github
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -68,7 +68,7 @@ jobs:
       group: release-npm
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0