Pending tasks for v1.4 release (#2)

* Update Solana version for rabbitmq crate.

* Why was that there?

* Un-rollback Tokio.

Author: ray-kast

crates/plugin/Cargo.toml

@@ -39,7 +39,7 @@ solana-metrics = "1.10.25"
 spl-token = "3.3.0"
 
 [dependencies.tokio]
-version = "1.14.1"
+version = "1.18.2"
 features = [
   "fs",
   "net",