Fix Pool alias with Pool changes

Author: mehcode

sqlx-core/src/mysql/mod.rs

@@ -25,4 +25,4 @@ pub use types::MySqlTypeInfo;
 pub use row::MySqlRow;
 
 /// An alias for [`Pool`], specialized for **MySQL**.
-pub type MySqlPool = super::Pool<MySql>;
+pub type MySqlPool = super::Pool<MySqlConnection>;

sqlx-core/src/postgres/mod.rs

@@ -17,4 +17,4 @@ mod row;
 mod types;
 
 /// An alias for [`Pool`], specialized for **Postgres**.
-pub type PgPool = super::Pool<Postgres>;
+pub type PgPool = super::Pool<PgConnection>;