Bump engine.io-client from 5.1.1 to 5.1.2 (#5975)
Bump engine.io-client from 5.1.1 to 5.1.2 (#5975)

Bumps [engine.io-client](https://github.com/socketio/engine.io-client) from 5.1.1 to 5.1.2.
- [Release notes](https://github.com/socketio/engine.io-client/releases)
- [Changelog](https://github.com/socketio/engine.io-client/blob/master/CHANGELOG.md)
- [Commits](https://github.com/socketio/engine.io-client/compare/5.1.1...5.1.2)

---
updated-dependencies:
- dependency-name: engine.io-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
zooniverse/Panoptes-Front-End