ci: use actions checkout v7

Author: afc163

.github/workflows/react-doctor.yml

@@ -20,7 +20,7 @@ jobs:
   react-doctor:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
           persist-credentials: false

.github/workflows/surge-preview.yml

@@ -19,7 +19,7 @@ jobs:
     env:
       PREVIEW: true
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
+      - uses: actions/checkout@v7
         with:
           persist-credentials: false
       - name: Check Surge token