*: Update client-go to fix retryable deadlock information collecting …

…of information_schema.deadlocks (#27413)

go.mod

@@ -66,7 +66,7 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.0
 	github.com/tiancaiamao/appdash v0.0.0-20181126055449-889f96f722a2
-	github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210816071108-df2119f51be1
+	github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210820051608-ff94d0c9acb8
 	github.com/tikv/pd v1.1.0-beta.0.20210818082359-acba1da0018d
 	github.com/twmb/murmur3 v1.1.3
 	github.com/uber-go/atomic v1.4.0

go.sum

@@ -694,8 +694,8 @@ github.com/tiancaiamao/appdash v0.0.0-20181126055449-889f96f722a2/go.mod h1:2PfK
 github.com/tidwall/gjson v1.3.5/go.mod h1:P256ACg0Mn+j1RXIDXoss50DeIABTYK1PULOJHhxOls=
 github.com/tidwall/match v1.0.1/go.mod h1:LujAq0jyVjBy028G1WhWfIzbpQfMO8bBZ6Tyb0+pL9E=
 github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
-github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210816071108-df2119f51be1 h1:/CRgfKWlH9Go5BFoV+dO04oLRWWOgAZ8q1effzEPRMw=
-github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210816071108-df2119f51be1/go.mod h1:KwtZXt0JD+bP9bWW2ka0ir3Wp3oTEfZUTh22bs2sI4o=
+github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210820051608-ff94d0c9acb8 h1:/S06bCy/r/zuAe+uSjkywM7RHq4rXySApIom3uBVsIU=
+github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210820051608-ff94d0c9acb8/go.mod h1:KwtZXt0JD+bP9bWW2ka0ir3Wp3oTEfZUTh22bs2sI4o=
 github.com/tikv/pd v1.1.0-beta.0.20210323121136-78679e5e209d/go.mod h1:Jw9KG11C/23Rr7DW4XWQ7H5xOgGZo6DFL1OKAF4+Igw=
 github.com/tikv/pd v1.1.0-beta.0.20210818082359-acba1da0018d h1:AFm1Dzw+QRUevWRfrFp45CPPkuK/zdSWcfxI10z+WVE=
 github.com/tikv/pd v1.1.0-beta.0.20210818082359-acba1da0018d/go.mod h1:rammPjeZgpvfrQRPkijcx8tlxF1XM5+m6kRXrkDzCAA=