Bump minimal supported mysql_async version to 0.34

Author: weiznich

CHANGELOG.md

@@ -11,6 +11,7 @@ for Rust libraries in [RFC #1105](https://github.com/rust-lang/rfcs/blob/master/
 * The minimal supported rust version is now 1.78.0
 * Add a `SyncConnectionWrapper` type that turns a sync connection into an async one. This enables SQLite support for diesel-async
 * Add support for `diesel::connection::Instrumentation` to support logging and other instrumentation for any of the provided connection impls.
+* Bump minimal supported mysql_async version to 0.34
 
 ## [0.4.1] - 2023-09-01
 

Cargo.toml

@@ -27,11 +27,11 @@ futures-util = { version = "0.3.17", default-features = false, features = [
 ] }
 tokio-postgres = { version = "0.7.10", optional = true }
 tokio = { version = "1.26", optional = true }
-mysql_async = { version = ">=0.30.0,<0.34", optional = true, default-features = false, features = [
+mysql_async = { version = "0.34", optional = true, default-features = false, features = [
         "minimal",
         "derive",
 ] }
-mysql_common = { version = ">=0.29.0,<0.32.0", optional = true, default-features = false, features = [
+mysql_common = { version = "0.32", optional = true, default-features = false, features = [
         "frunk",
         "derive",
 ] }
@@ -52,7 +52,7 @@ diesel_migrations = "2.2.0"
 assert_matches = "1.0.1"
 
 [features]
-default = []
+default = ["sync-connection-wrapper"]
 mysql = [
         "diesel/mysql_backend",
         "mysql_async",