Fix AI review

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/connector.go

@@ -550,11 +550,15 @@ WHERE
 	}
 	maps.Copy(args, scope.SQLArguments())
 
-	_, err = conn.Exec(ctx, q, args)
+	result, err := conn.Exec(ctx, q, args)
 	if err != nil {
 		return fmt.Errorf("cannot update connector: %w", err)
 	}
 
+	if result.RowsAffected() == 0 {
+		return ErrResourceNotFound
+	}
+
 	c.EncryptedConnection = encryptedConnection
 	c.populateSlackSettings()