go.mod:update br to the latest version (pingcap#23379)

go.mod

@@ -2,9 +2,11 @@ module github.com/pingcap/tidb
 
 require (
 	github.com/BurntSushi/toml v0.3.1
+	github.com/DATA-DOG/go-sqlmock v1.5.0 // indirect
 	github.com/HdrHistogram/hdrhistogram-go v0.9.0 // indirect
 	github.com/Jeffail/gabs/v2 v2.5.1
 	github.com/blacktear23/go-proxyprotocol v0.0.0-20180807104634-af7a81e8dd0d
+	github.com/carlmjohnson/flagext v0.21.0 // indirect
 	github.com/cheggaaa/pb/v3 v3.0.4 // indirect
 	github.com/codahale/hdrhistogram v0.9.0 // indirect
 	github.com/coocood/freecache v1.1.1
@@ -27,7 +29,7 @@ require (
 	github.com/gorilla/mux v1.7.4
 	github.com/grpc-ecosystem/go-grpc-middleware v1.1.0
 	github.com/iancoleman/strcase v0.0.0-20191112232945-16388991a334
-	github.com/klauspost/compress v1.10.5 // indirect
+	github.com/joho/sqltocsv v0.0.0-20210208114054-cb2c3a95fb99 // indirect
 	github.com/klauspost/cpuid v1.2.1
 	github.com/kr/text v0.2.0 // indirect
 	github.com/mattn/go-runewidth v0.0.10 // indirect
@@ -40,7 +42,7 @@ require (
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/pierrec/lz4 v2.5.2+incompatible // indirect
 	github.com/pingcap/badger v1.5.1-0.20200908111422-2e78ee155d19
-	github.com/pingcap/br v4.0.0-beta.2.0.20210302095941-59e4efeaeb47+incompatible
+	github.com/pingcap/br v5.0.0-nightly.0.20210317100924-d95f9fdfcd29+incompatible
 	github.com/pingcap/check v0.0.0-20200212061837-5e12011dc712
 	github.com/pingcap/errors v0.11.5-0.20201126102027-b0a155152ca3
 	github.com/pingcap/failpoint v0.0.0-20200702092429-9f69995143ce
@@ -65,6 +67,8 @@ require (
 	github.com/uber-go/atomic v1.4.0
 	github.com/uber/jaeger-client-go v2.22.1+incompatible
 	github.com/uber/jaeger-lib v2.4.0+incompatible // indirect
+	github.com/xitongsys/parquet-go v1.6.0 // indirect
+	github.com/xitongsys/parquet-go-source v0.0.0-20201108113611-f372b7d813be // indirect
 	github.com/zhangjinpeng1987/raft v0.0.0-20200819064223-df31bb68a018 // indirect
 	go.etcd.io/etcd v0.5.0-alpha.5.0.20200824191128-ae9734ed278b
 	go.uber.org/atomic v1.7.0
@@ -84,6 +88,7 @@ require (
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 // indirect
 	honnef.co/go/tools v0.1.3 // indirect
+	modernc.org/mathutil v1.2.2 // indirect
 	sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0
 	sourcegraph.com/sourcegraph/appdash-data v0.0.0-20151005221446-73f23eafcf67
 )