go.mod: update BR version(release-4.0) (#20116)

go.mod

@@ -20,12 +20,11 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4
 	github.com/iancoleman/strcase v0.0.0-20191112232945-16388991a334
 	github.com/klauspost/cpuid v1.2.1
-	github.com/kr/pretty v0.2.0 // indirect
 	github.com/ngaut/pools v0.0.0-20180318154953-b7bc8c42aac7
 	github.com/ngaut/sync2 v0.0.0-20141008032647-7a24ed77b2ef
 	github.com/opentracing/basictracer-go v1.0.0
 	github.com/opentracing/opentracing-go v1.1.0
-	github.com/pingcap/br v0.0.0-20200907090854-8a4cd9e0abd1
+	github.com/pingcap/br v0.0.0-20200921112226-ee2e962f5e4b
 	github.com/pingcap/check v0.0.0-20200212061837-5e12011dc712
 	github.com/pingcap/errors v0.11.5-0.20200917111840-a15ef68f753d
 	github.com/pingcap/failpoint v0.0.0-20200702092429-9f69995143ce
@@ -51,7 +50,6 @@ require (
 	go.etcd.io/etcd v0.5.0-alpha.5.0.20191023171146-3cf2f69b5738
 	go.uber.org/atomic v1.7.0
 	go.uber.org/automaxprocs v1.2.0
-	go.uber.org/multierr v1.6.0 // indirect
 	go.uber.org/zap v1.16.0
 	golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc
 	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208

go.sum

@@ -418,6 +418,8 @@ github.com/pingcap/br v0.0.0-20200805095214-09dcc7534821 h1:7RnBnMctJVWnnl97bxXp
 github.com/pingcap/br v0.0.0-20200805095214-09dcc7534821/go.mod h1:JVsPK6Ibo2RBkTC2l1bzcRBVuHte/tJRERgay5gsBb8=
 github.com/pingcap/br v0.0.0-20200907090854-8a4cd9e0abd1 h1:i7bl0o9aKtecGi/VQnDxir2ByBstbIW70OGKAoeryxw=
 github.com/pingcap/br v0.0.0-20200907090854-8a4cd9e0abd1/go.mod h1:nCJjSVtB6bUTdXlPhZ1vnNavqJ+Ea3JZAELu2IP2B7w=
+github.com/pingcap/br v0.0.0-20200921112226-ee2e962f5e4b h1:qSh2uuXXuFnXRgL1vU3AvXbzg8Nn9IyFbUheCsRB7SQ=
+github.com/pingcap/br v0.0.0-20200921112226-ee2e962f5e4b/go.mod h1:q/Fg9CsYlK3wGPioVqcosmce2dKS505GVnyJcqQuNpw=
 github.com/pingcap/check v0.0.0-20190102082844-67f458068fc8/go.mod h1:B1+S9LNcuMyLH/4HMTViQOJevkGiik3wW2AN9zb2fNQ=
 github.com/pingcap/check v0.0.0-20191107115940-caf2b9e6ccf4/go.mod h1:PYMCGwN0JHjoqGr3HrZoD+b8Tgx8bKnArhSq8YVzUMc=
 github.com/pingcap/check v0.0.0-20191216031241-8a5a85928f12/go.mod h1:PYMCGwN0JHjoqGr3HrZoD+b8Tgx8bKnArhSq8YVzUMc=
@@ -487,6 +489,7 @@ github.com/pingcap/tidb v1.1.0-beta.0.20200606093724-b5b4da0e6a90/go.mod h1:aaBB
 github.com/pingcap/tidb v1.1.0-beta.0.20200715100003-b4da443a3c4c/go.mod h1:TplKBs1sevRvK11aT7ro0ntTCalyh1fMaWACp03dQf4=
 github.com/pingcap/tidb v1.1.0-beta.0.20200716023258-b10faca6ff89/go.mod h1:hDlQ5BJ4rLLCOUlvXqW3skyYEjyymzeTA3eXpNEDx38=
 github.com/pingcap/tidb v1.1.0-beta.0.20200820092836-c5b7658b0896/go.mod h1:IAStISSVhEI9Gp/sE4w6Ms0WxpdBJ9qNTczNyskvd5A=
+github.com/pingcap/tidb v1.1.0-beta.0.20200921100526-29e8c0913100/go.mod h1:iLesxD6gb1IAt/hIH8+4YZk6yIGn6mRxB/iCDG8Tk9U=
 github.com/pingcap/tidb-tools v4.0.0-beta.1.0.20200306084441-875bd09aa3d5+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
 github.com/pingcap/tidb-tools v4.0.0-rc.1.0.20200421113014-507d2bb3a15e+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=
 github.com/pingcap/tidb-tools v4.0.0-rc.1.0.20200514040632-f76b3e428e19+incompatible/go.mod h1:XGdcy9+yqlDSEMTpOXnwf3hiTeqrV6MN/u1se9N8yIM=