update actions/checkout

Author: silverwind

.github/workflows/deno.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: denoland/setup-deno@v1
       - run: deno fmt --check
       - run: deno lint