bump hashicorp/go-msgpack v0.5.5

full diff: hashicorp/go-msgpack@71c2886...v0.5.5

- hashicorp/go-msgpack#3 Add go.mod
- hashicorp/go-msgpack#7 Do not attempt to set unsettable types
- hashicorp/go-msgpack#8 codec: do not dereference pointers/interfaces for omitempty support
  - backport of hashicorp/go-msgpack@006e153
  - backport of hashicorp/go-msgpack@006e153
  - fixes ugorji/go#67 "omitempty" fails on pointers to bools

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor.conf

@@ -28,7 +28,7 @@ github.com/gorilla/mux                  c5c6c98bc25355028a63748a498942a6398ccd22
 github.com/google/btree                 4030bb1f1f0c35b30ca7009e9ebd06849dd45306 # v1.0.0
 github.com/hashicorp/consul             9a9cc9341bb487651a0399e3fc5e1e8a42e62dd9 # v0.5.2
 github.com/hashicorp/errwrap            8a6fb523712970c966eefc6b39ed2c5e74880354 # v1.0.0
-github.com/hashicorp/go-msgpack         71c2886f5a673a35f909803f38ece5810165097b
+github.com/hashicorp/go-msgpack         ad60660ecf9c5a1eae0ca32182ed72bab5807961 # v0.5.5
 github.com/hashicorp/go-multierror      886a7fbe3eb1c874d46f623bfa70af45f425b3d1 # v1.0.0
 github.com/hashicorp/memberlist         e1138a6a4d8a6eaec6c919aeae5efbe4d69b1ece # v0.1.4
 github.com/sean-/seed                   e2103e2c35297fb7e17febb81e49b312087a2372