Unpin chrono

Author: mshauneu

convergence-arrow/Cargo.toml

@@ -12,7 +12,7 @@ tokio = { version = "1" }
 async-trait = "0.1"
 datafusion = "47"
 convergence = { path = "../convergence", version = "0.16.0" }
-chrono = "=0.4.39"
+chrono = "0.4"
 
 [dev-dependencies]
 tokio-postgres = { version =  "0.7", features = [ "with-chrono-0_4" ] }