Update actions/checkout digest to 93cb6ef

Author: renovate[bot]

.github/workflows/publish_doc.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
         with:
           fetch-depth: 0
           ssh-key: ${{ secrets.KEY }}