[percona] Update psmdb-36 version

library/percona

@@ -37,7 +37,7 @@ GitCommit: 0085549d89744ec5200d3b173a51c7fb5faae75f
 Directory: percona-server-mongodb-4.0
 File: Dockerfile
 
-Tags: psmdb-3.6.20, psmdb-3.6
-GitCommit: 10eca796491518ec22589d77160eb9269d613150
+Tags: psmdb-3.6.21, psmdb-3.6
+GitCommit: 545f53f247080097203909d5af04b3867c2dd774
 Directory: percona-server-mongodb-3.6
 File: Dockerfile