Bump axios from 0.27.2 to 0.28.0 in /loadtest

Bumps [axios](https://github.com/axios/axios) from 0.27.2 to 0.28.0.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v0.28.0/CHANGELOG.md)
- [Commits](axios/axios@v0.27.2...v0.28.0)

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

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

loadtest/package.json

@@ -11,7 +11,7 @@
   "license": "ISC",
   "type": "module",
   "dependencies": {
-    "axios": "^0.27.2",
+    "axios": "^0.28.0",
     "csv-writer": "^1.6.0",
     "linecount": "^1.0.1",
     "n-readlines": "^1.0.1",