[TRI-2630] Logging in with the same email but different case creates a new account

If you login with [test@gmail.com](mailto:test@gmail.com) and [test@Gmail.com](mailto:test@Gmail.com) you will create two accounts.

<sub>From [SyncLinear.com](https://synclinear.com) | [TRI-2630](https://linear.app/triggerdotdev/issue/TRI-2630/logging-in-with-the-same-email-but-different-case-creates-a-new)</sub>