consensus_encoding: Add dep version number

Add a version number to the deps so we can publish.

Author: tcharding

consensus_encoding/Cargo.toml

@@ -18,8 +18,8 @@ std = ["alloc", "internals/std"]
 alloc = ["internals/alloc"]
 
 [dependencies]
-hashes = { package = "bitcoin_hashes", path = "../hashes", default-features = false }
-internals = { package = "bitcoin-internals", path = "../internals" }
+hashes = { package = "bitcoin_hashes", path = "../hashes", version = "0.16.0", default-features = false }
+internals = { package = "bitcoin-internals", path = "../internals", version = "0.4.0" }
 
 [package.metadata.docs.rs]
 all-features = true