dep: update yamux and bitswap

* yamux: reduce goroutines per connection from 3 to 2.
* bitswap:
  - fix a very slow memory leak
  - adds an option for disabling providing (unused for now)
  - fixes a race condition on start
  - tag peers with outstanding requests in the connection manager

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/hashicorp/golang-lru v0.5.1
 	github.com/hsanjuan/go-libp2p-http v0.0.2
 	github.com/ipfs/dir-index-html v1.0.3
-	github.com/ipfs/go-bitswap v0.0.5
+	github.com/ipfs/go-bitswap v0.0.7
 	github.com/ipfs/go-block-format v0.0.2
 	github.com/ipfs/go-blockservice v0.0.3
 	github.com/ipfs/go-cid v0.0.2
@@ -93,6 +93,7 @@ require (
 	github.com/libp2p/go-maddr-filter v0.0.4
 	github.com/libp2p/go-stream-muxer v0.0.1
 	github.com/libp2p/go-testutil v0.0.1
+	github.com/libp2p/go-yamux v1.2.2 // indirect
 	github.com/mattn/go-isatty v0.0.7 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
@@ -118,10 +119,7 @@ require (
 	go.uber.org/goleak v0.10.0 // indirect
 	go.uber.org/multierr v1.1.0 // indirect
 	go4.org v0.0.0-20190313082347-94abd6928b1d // indirect
-	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f // indirect
-	golang.org/x/net v0.0.0-20190514140710-3ec191127204 // indirect
-	golang.org/x/sys v0.0.0-20190520161452-ad400b127469
-	golang.org/x/text v0.3.2 // indirect
+	golang.org/x/sys v0.0.0-20190522044717-8097e1b27ff5
 	gopkg.in/cheggaaa/pb.v1 v1.0.28
 	gotest.tools/gotestsum v0.3.4
 )