Cargo.toml: Undo version bump to v0.47.0 as v0.46.0 is unreleased (#2733)

Author: mxinden

Cargo.toml

@@ -3,7 +3,7 @@ name = "libp2p"
 edition = "2021"
 rust-version = "1.60.0"
 description = "Peer-to-peer networking library"
-version = "0.47.0"
+version = "0.46.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 license = "MIT"
 repository = "https://github.com/libp2p/rust-libp2p"