fix: show audit logs for forgot password flow (#15181)

Fixes https://github.com/coder/coder/issues/15150

Audit logs for requesting a password reset, and a user updating their
password, now show up in the audit log.

coderd/database/dump.sql

@@ -19,7 +19,8 @@ CREATE TYPE audit_action AS ENUM (
     'stop',
     'login',
     'logout',
-    'register'
+    'register',
+    'request_password_reset'
 );
 
 CREATE TYPE automatic_updates AS ENUM (