chore(deps-dev): bump axios from 0.19.0 to 0.21.1

Bumps [axios](https://github.com/axios/axios) from 0.19.0 to 0.21.1.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md)
- [Commits](axios/axios@v0.19.0...v0.21.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -22,7 +22,7 @@
     "stream-browserify": "3.0.0"
   },
   "devDependencies": {
-    "axios": "0.19.0",
+    "axios": "0.21.1",
     "babel-plugin-istanbul": "4.1.6",
     "d3": "3.5.17",
     "eslint-plugin-import": "^2.17.2",