chore: update deps

go.mod

 module github.com/ipld/go-car
 
 require (
-	github.com/ipfs/go-block-format v0.0.2
+	github.com/ipfs/go-block-format v0.0.3
 	github.com/ipfs/go-cid v0.0.7
-	github.com/ipfs/go-ipld-cbor v0.0.4
+	github.com/ipfs/go-ipld-cbor v0.0.5
 	github.com/ipfs/go-ipld-format v0.2.0
 	github.com/ipfs/go-merkledag v0.3.2
 	github.com/ipld/go-ipld-prime v0.7.0
 	github.com/ipld/go-ipld-prime-proto v0.1.1
 	github.com/multiformats/go-multihash v0.0.14
-	github.com/stretchr/testify v1.6.1
+	github.com/stretchr/testify v1.7.0
 )
 
 go 1.13