Bump axios from 0.19.2 to 0.21.1 (#344)

Bumps [axios](https://github.com/axios/axios) from 0.19.2 to 0.21.1.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v0.21.1/CHANGELOG.md)
- [Commits](axios/axios@v0.19.2...v0.21.1)

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package.json

@@ -32,7 +32,7 @@
     },
     "license": "Apache-2.0",
     "dependencies": {
-        "axios": "^0.19.2",
+        "axios": "^0.21.1",
         "bip32": "^1.0.2",
         "chalk": "^2.3.0",
         "cli-table3": "^0.5.1",