[#1377] added Authentik OAuth2 provider

Co-authored-by: Marc Singer <ms@pr0.tech>

forms/record_upsert.go

@@ -467,7 +467,7 @@ func (form *RecordUpsert) Validate() error {
 				&form.Username,
 				// require only on update, because on create we fallback to auto generated username
 				validation.When(!form.record.IsNew(), validation.Required),
-				validation.Length(3, 100),
+				validation.Length(3, 150),
 				validation.Match(usernameRegex),
 				validation.By(form.checkUniqueUsername),
 			),