Bump axios from 0.18.0 to 0.21.1 in /sparkler-ui (#208)

Bumps [axios](https://github.com/axios/axios) from 0.18.0 to 0.21.1.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v0.21.1/CHANGELOG.md)
- [Commits](axios/axios@v0.18.0...v0.21.1)

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sparkler-ui/package-lock.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "@blueprintjs/core": "^3.14.1",
     "arangojs": "5",
-    "axios": "^0.18.0",
+    "axios": "^0.21.1",
     "dotenv": "^7.0.0",
     "js-file-download": "^0.4.10",
     "location-origin": "^1.1.4",