Bump engine.io from 4.1.1 to 4.1.2 in /js/web
Bumps [engine.io](https://github.com/socketio/engine.io) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/socketio/engine.io/releases)
- [Changelog](https://github.com/socketio/engine.io/blob/4.1.2/CHANGELOG.md)
- [Commits](https://github.com/socketio/engine.io/compare/4.1.1...4.1.2)
---
updated-dependencies:
- dependency-name: engine.io
dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>