🚸(oidc) ignore case when fallback on email

Some identity providers might change the case, but in our products we
don't consider case variation to be consider as different email
addresses.

Next step would be to normalize the DB value of email to be lower-case.

CHANGELOG.md

@@ -15,6 +15,8 @@ and this project adheres to
 
 - ♿️(frontend) Focus main container after navigation #1854
 - 🚸(backend) sort user search results by proximity with the active user #1802 
+- 🚸(oidc) ignore case when fallback on email #1880
+
 
 ### Fixed