chore(deno): add cache step in dev task

Author: hasundue

deno.json

@@ -4,7 +4,7 @@
     "check": "deno check ./**/*.ts",
     "test": "deno test -A --no-check",
     "build": "mkdir -p ./dist && deno run -A ./bin/bundle.ts",
-    "dev": "deno fmt && deno lint && deno task -q check && deno task -q test"
+    "dev": "deno fmt && deno lint && deno task -q check && deno task cache && deno task -q test"
   },
   "exclude": [
     "dist/",