mirkan1

@adamwdraper can we accept this PR?

[this commit](https://github.com/Colab-Finances/mercury-api/commit/d024a3bd7a898d96132eea954c9498657b482976) fixed it using another library

I found a solution on [stackoverflow](https://stackoverflow.com/a/43788860/9760560) basically import [json-bigint](https://www.npmjs.com/package/json-bigint) with axios' built-in transformResponse