Bump axios from 0.18.1 to 0.21.2 (#49)

Bumps [axios](https://github.com/axios/axios) from 0.18.1 to 0.21.2.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md)
- [Commits](axios/axios@v0.18.1...v0.21.2)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: direct:development
...

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Author: dependabot[bot]

package-lock.json

@@ -49,7 +49,7 @@
   },
   "devDependencies": {
     "@babel/preset-env": "^7.3.4",
-    "axios": "^0.18.1",
+    "axios": "^0.21.2",
     "axios-mock-adapter": "^1.16.0",
     "codecov": "^3.2.0",
     "cross-env": "^5.1.6",