Bump axios from 0.18.0 to 0.21.2 in /days/041-044-react/demo/tips

Bumps [axios](https://github.com/axios/axios) from 0.18.0 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@v0.18.0...v0.21.2)

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

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

Author: dependabot[bot]

days/041-044-react/demo/tips/package-lock.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "axios": "^0.18.0",
+    "axios": "^0.21.2",
     "react": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-highlight-words": "^0.16.0",