Update tests to use ipld.IsNotFound to check for notfound errors

go.mod

@@ -4,14 +4,18 @@ require (
 	github.com/ipfs/go-cid v0.0.7
 	github.com/ipfs/go-ipfs-files v0.0.8
 	github.com/ipfs/go-ipld-cbor v0.0.5
-	github.com/ipfs/go-ipld-format v0.2.0
-	github.com/ipfs/go-merkledag v0.4.0
+	github.com/ipfs/go-ipld-format v0.2.1-0.20220302134852-d02e0e18fc65
+	github.com/ipfs/go-merkledag v0.5.2-0.20220302145706-4c7f7bfbe598
 	github.com/ipfs/go-path v0.1.1
 	github.com/ipfs/go-unixfs v0.2.4
+	github.com/klauspost/cpuid/v2 v2.0.6 // indirect
 	github.com/libp2p/go-libp2p-core v0.8.5
-	github.com/multiformats/go-multiaddr v0.3.1
+	github.com/multiformats/go-multiaddr v0.3.3
 	github.com/multiformats/go-multibase v0.0.3
 	github.com/multiformats/go-multihash v0.0.15
+	go.uber.org/multierr v1.7.0 // indirect
+	golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a // indirect
+	golang.org/x/sys v0.0.0-20210514084401-e8d321eab015 // indirect
 )
 
 go 1.16