Issue with Migration rule v111 (#9449)

* Issue with Migration rule v111

I was facing some issues with migration rule v111

* Update v111.go

Fix pgsql test cases

Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>

models/migrations/v111.go

@@ -34,6 +34,9 @@ func addBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
 		return err
 	}
 
+	if _, err := sess.Exec("UPDATE `protected_branch` SET `enable_whitelist` = ? WHERE enable_whitelist IS NULL", false); err != nil {
+		return err
+	}
 	if _, err := sess.Exec("UPDATE `protected_branch` SET `can_push` = `enable_whitelist`"); err != nil {
 		return err
 	}