Bump axios, auth0 and posthog-node in /api

Bumps [axios](https://github.com/axios/axios) to 1.6.2 and updates ancestor dependencies [axios](https://github.com/axios/axios), [auth0](https://github.com/auth0/node-auth0) and [posthog-node](https://github.com/PostHog/posthog-node). These dependencies need to be updated together.


Updates `axios` from 0.21.4 to 1.6.2
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md)
- [Commits](axios/axios@v0.21.4...v1.6.2)

Updates `auth0` from 2.44.1 to 4.1.0
- [Release notes](https://github.com/auth0/node-auth0/releases)
- [Changelog](https://github.com/auth0/node-auth0/blob/master/CHANGELOG.md)
- [Commits](https://github.com/auth0/node-auth0/commits)

Updates `posthog-node` from 2.6.0 to 3.1.3
- [Release notes](https://github.com/PostHog/posthog-node/releases)
- [Commits](https://github.com/PostHog/posthog-node/commits)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
- dependency-name: auth0
  dependency-type: direct:production
- dependency-name: posthog-node
  dependency-type: direct:production
...

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