Merge pull request #19 from brave/update-diesel

Update diesel to 2.0 and update test client dependencies

Author: DJAndries

Cargo.lock

@@ -23,7 +23,7 @@ serde = "1.0"
 serde_json = "1.0"
 async-trait = "0.1"
 rdkafka = "0.29"
-diesel = { version = "1.4", features = ["postgres", "r2d2"] }
+diesel = { version = "2.0", features = ["postgres", "r2d2"] }
 r2d2 = "0.8"
 chrono = "0.4"
 tokio-util = "0.7"