Bump axios from 0.20.0 to 0.21.0

Bumps [axios](https://github.com/axios/axios) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md)
- [Commits](https://github.com/axios/axios/compare/v0.20.0...v0.21.0)

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

package.json

@@ -11,7 +11,7 @@
     },
     "devDependencies": {
         "@johmun/vue-tags-input": "^2.1.0",
-        "axios": "^0.20.0",
+        "axios": "^0.21.0",
         "bootstrap-sass": "^3.3.7",
         "cross-env": "^7.0",
         "font-awesome": "^4.7.0",