chore(rust/cardano-chain-follower): bump crate version to 0.0.4 (#59)

Author: saibatizoku

rust/cardano-chain-follower/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cardano-chain-follower"
-version = "0.0.3"
+version = "0.0.4"
 edition.workspace = true
 authors.workspace = true
 homepage.workspace = true