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

Author: renovate[bot]

.github/workflows/check.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
 
       - name: Restore
         uses: ./.github/actions/restore

.github/workflows/preview.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
 
       - name: Restore
         uses: ./.github/actions/restore

.github/workflows/release-please.yml

@@ -21,7 +21,7 @@ jobs:
 
       - name: Checkout
         if: ${{ steps.release.outputs.release_created }}
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
 
       - name: Restore
         if: ${{ steps.release.outputs.release_created }}