Bump actions/checkout from 5 to 6 (#53)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/deno.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Setup repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Deno
         uses: denoland/setup-deno@v2