Update default driver

tap_mysql/tap.py

@@ -172,7 +172,7 @@ def get_sqlalchemy_url(self, config: Mapping[str, Any]) -> str:
             return cast(str, config["sqlalchemy_url"])
 
         sqlalchemy_url = URL.create(
-            drivername="mysql+mysqldb",
+            drivername="mysql+pymysql",
             username=config["user"],
             password=config["password"],
             host=config["host"],