Upgrade axios dependency to latest verison

[mikelax]

Describe the problem you'd like to have solved

The latest version of axios is currently 0.21.0. This library should upgrade to the latest version of axios, assuming the plan is to stick with axios as opposed to switching to another library for making HTTP requests.

Describe the ideal solution

Upgrade to axios version 0.21.0

[davidpatrick]

Hey @mikelax if you have the time, PRs are welcome, otherwise I will get to this on our next release 👍

[davidpatrick]

@mikelax is there something you need from this axios 0.21.0 for this library? Or is this just a general dependency bump request?

[mikelax]

@davidpatrick at first I thought it was related to a snyk cve, but after double checking I don't see anything, so it can be considered a general bump. I did notice that version 0.20.0 seems to be a big change so maybe there will be a gain.

[lauriharpf]

@davidpatrick, #206 updates to "axios": "^0.20.0", but should this issue still be kept open?

Doing an npm init to create an empty project and npm add axios@^0.20.0 gives this warning:

npm WARN deprecated axios@0.20.0: Critical security vulnerability fixed in v0.21.1. For more information, see axios/axios#3410

Should we update to axios@^0.21.1?

[mikelax]

I agree, as long as we are upgrading the lib might as well go to the latest version and fix the cve.