build(deps): bump axios and pm2

Removes [axios](https://github.com/axios/axios). It's no longer used after updating ancestor dependency [pm2](https://github.com/Unitech/pm2). These dependencies need to be updated together.


Removes `axios`

Updates `pm2` from 5.2.0 to 5.3.1
- [Release notes](https://github.com/Unitech/pm2/releases)
- [Changelog](https://github.com/Unitech/pm2/blob/master/CHANGELOG.md)
- [Commits](Unitech/pm2@5.2.0...v5.3.1)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
- dependency-name: pm2
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -27,7 +27,7 @@
     "eslint-config-openlayers": "~14.0.0",
     "eslint-plugin-import": "^2.26.0",
     "eslint-plugin-tsdoc": "^0.2.16",
-    "pm2": "^5.2.0"
+    "pm2": "^5.3.1"
   },
   "repository": {
     "type": "git",