feat(deps): update graphsync (#86)

Author: hannahhoward

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/ipfs/go-blockservice v0.1.3
 	github.com/ipfs/go-cid v0.0.7
 	github.com/ipfs/go-datastore v0.4.4
-	github.com/ipfs/go-graphsync v0.2.0
+	github.com/ipfs/go-graphsync v0.2.1
 	github.com/ipfs/go-ipfs-blockstore v1.0.1
 	github.com/ipfs/go-ipfs-blocksutil v0.0.1
 	github.com/ipfs/go-ipfs-chunker v0.0.5

go.sum

@@ -151,8 +151,8 @@ github.com/ipfs/go-ds-badger v0.0.5/go.mod h1:g5AuuCGmr7efyzQhLL8MzwqcauPojGPUaH
 github.com/ipfs/go-ds-badger v0.2.1/go.mod h1:Tx7l3aTph3FMFrRS838dcSJh+jjA7cX9DrGVwx/NOwE=
 github.com/ipfs/go-ds-leveldb v0.0.1/go.mod h1:feO8V3kubwsEF22n0YRQCffeb79OOYIykR4L04tMOYc=
 github.com/ipfs/go-ds-leveldb v0.4.1/go.mod h1:jpbku/YqBSsBc1qgME8BkWS4AxzF2cEu1Ii2r79Hh9s=
-github.com/ipfs/go-graphsync v0.2.0 h1:x94MvHLNuRwBlZzVal7tR1RYK7T7H6bqQLPopxDbIF0=
-github.com/ipfs/go-graphsync v0.2.0/go.mod h1:gEBvJUNelzMkaRPJTpg/jaKN4AQW/7wDWu0K92D8o10=
+github.com/ipfs/go-graphsync v0.2.1 h1:MdehhqBSuTI2LARfKLkpYnt0mUrqHs/mtuDnESXHBfU=
+github.com/ipfs/go-graphsync v0.2.1/go.mod h1:gEBvJUNelzMkaRPJTpg/jaKN4AQW/7wDWu0K92D8o10=
 github.com/ipfs/go-ipfs-blockstore v0.0.1/go.mod h1:d3WClOmRQKFnJ0Jz/jj/zmksX0ma1gROTlovZKBmN08=
 github.com/ipfs/go-ipfs-blockstore v0.1.0/go.mod h1:5aD0AvHPi7mZc6Ci1WCAhiBQu2IsfTduLl+422H6Rqw=
 github.com/ipfs/go-ipfs-blockstore v0.1.4 h1:2SGI6U1B44aODevza8Rde3+dY30Pb+lbcObe1LETxOQ=