Update dependencies (#37)

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slack.json

@@ -1,5 +1,5 @@
 {
   "hooks": {
-    "get-hooks": "deno run -q --allow-read --allow-net https://deno.land/x/[email protected].2/mod.ts"
+    "get-hooks": "deno run -q --allow-read --allow-net https://deno.land/x/[email protected].3/mod.ts"
   }
 }