Bump axios from 0.18.1 to 0.21.2

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:production
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -4,7 +4,7 @@
   "private": true,
   "dependencies": {
     "@metamask/detect-provider": "^1.2.0",
-    "axios": "^0.18.1",
+    "axios": "^0.21.2",
     "bitcoin-proof": "^2.0.0",
     "eth-object": "https://github.com/syscoin/eth-object.git",
     "eth-proof": "^2.1.4",