Upgrade to msgpack 2.1.1

Probably not necessary, but it's out of an abundance of caution
while we're upgrading everything else.

go.mod

@@ -1,9 +1,9 @@
 module github.com/hashicorp/net-rpc-msgpackrpc/v2
 
-go 1.19
+go 1.20
 
 require (
-	github.com/hashicorp/go-msgpack/v2 v2.0.0
+	github.com/hashicorp/go-msgpack/v2 v2.1.1
 	github.com/hashicorp/go-multierror v1.1.1
 )
 

go.sum

@@ -1,12 +1,6 @@
 github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/go-msgpack/v2 v2.0.0 h1:c1fiLq1LNghmLOry1ipGhvLDi+/zEoaEP2JrE1oFJ9s=
-github.com/hashicorp/go-msgpack/v2 v2.0.0/go.mod h1:JIxYkkFJRDDRSoWQBSh7s9QAVThq+82iWmUpmE4jKak=
+github.com/hashicorp/go-msgpack/v2 v2.1.1 h1:xQEY9yB2wnHitoSzk/B9UjXWRQ67QKu5AOm8aFp8N3I=
+github.com/hashicorp/go-msgpack/v2 v2.1.1/go.mod h1:upybraOAblm4S7rx0+jeNy+CWWhzywQsSRV5033mMu4=
 github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
 github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190424220101-1e8e1cfdf96b/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=