deps: dashmap @ 4.x

Might as well upgrade before the connection pooling PR goes out.

Author: Fishrock123

Cargo.toml

@@ -31,7 +31,7 @@ hyper_client = ["hyper", "hyper-tls", "http-types/hyperium_http", "futures-util"
 
 [dependencies]
 async-trait = "0.1.37"
-dashmap = "3.11.10"
+dashmap = "4.0.2"
 http-types = "2.3.0"
 log = "0.4.7"