proxy: Update proxy to fix br hangs (release-9.0-beta.1) (#10033)

close #10032

Signed-off-by: JaySon-Huang <[email protected]>
Signed-off-by: gengliqi <[email protected]>

Co-authored-by: Liqi Geng <[email protected]>

Author: JaySon-Huang

contrib/tiflash-proxy

@@ -121,7 +121,7 @@ mysql> create table test.time_test(id int(11),v1 time(3) not null, v2 time(3));
 mysql> insert into test.time_test values(1,'20:20:20','20:20:20');
 mysql> alter table test.time_test set tiflash replica 1;
 func> wait_table test time_test
-mysql> use test; set tidb_enforce_mpp=1; set tidb_isolation_read_engines='tiflash'; select distinct v1 from(select v1 from time_test union all select v2 from time_test);
+mysql> use test; set tidb_enforce_mpp=1; set tidb_isolation_read_engines='tiflash'; select distinct v1 from(select v1 from time_test union all select v2 from time_test) a;
 +--------------+
 | v1           |
 +--------------+