Bump actions/checkout from 4 to 5 (#56)

Author: dependabot[bot]

.github/workflows/deno.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Setup repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Deno
         uses: denoland/setup-deno@v2