chore: fix update task

- Versions only specified in *deno.jsonc*, so change target.
- Version specification with `^` is not updated by *molt*, so remove it.

deno.jsonc

@@ -23,12 +23,12 @@
     "test:coverage": "deno task test --coverage=.coverage",
     "coverage": "deno coverage .coverage",
     "bench": "deno bench -A",
-    "update": "deno run --allow-env --allow-read --allow-write=. --allow-run=git,deno --allow-net=jsr.io,registry.npmjs.org jsr:@molt/cli ./*.ts",
+    "update": "deno run --allow-env --allow-read --allow-write=. --allow-run=git,deno --allow-net=jsr.io,registry.npmjs.org jsr:@molt/cli deno.jsonc",
     "update:commit": "deno task -q update --commit --pre-commit=fmt,lint"
   },
   "imports": {
-    "@std/assert": "jsr:@std/assert@^0.225.1",
-    "@std/bytes": "jsr:@std/bytes@^0.224.0",
+    "@std/assert": "jsr:@std/[email protected]",
+    "@std/bytes": "jsr:@std/[email protected]",
     "@lambdalisue/workerio": "./mod.ts"
   }
 }