fix: upgrade keccak from 3.0.2 to 3.0.4

Snyk has created this PR to upgrade keccak from 3.0.2 to 3.0.4.

See this package in npm:
https://www.npmjs.com/package/keccak

See this project in Snyk:
https://app.snyk.io/org/sammyfilly/project/6e19b243-0f19-49e7-8e23-856fd1a282f7?utm_source=github&utm_medium=referral&page=upgrade-pr

src/chains/filecoin/options/package.json

@@ -66,6 +66,6 @@
     "webpack-cli": "4.9.1"
   },
   "dependencies": {
-    "keccak": "3.0.2"
+    "keccak": "3.0.4"
   }
 }