Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -15,10 +15,10 @@ jobs:
           git config --global user.email github-actions@github.com
 
       - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
 
       - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
         with:
           ref: public
           path: _site

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1.264.0