Update SQLAlchemy stubs for 1.4.30 (#6973)

stubs/SQLAlchemy/sqlalchemy/dialects/mysql/asyncmy.pyi

@@ -54,7 +54,7 @@ class AsyncAdapt_asyncmy_dbapi:
     asyncmy: Any
     pymysql: Any
     paramstyle: str
-    def __init__(self, asyncmy, pymysql) -> None: ...
+    def __init__(self, asyncmy: Any) -> None: ...
     def connect(self, *arg, **kw): ...
 
 class MySQLDialect_asyncmy(MySQLDialect_pymysql):

stubs/SQLAlchemy/sqlalchemy/orm/util.pyi

@@ -82,6 +82,7 @@ class AliasedInsp(ORMEntityColumnsClauseRole, ORMFromClauseRole, sql_base.Memoiz
         _use_mapper_path,
         adapt_on_names,
         represents_outer_join,
+        nest_adapters: bool,  # added in 1.4.30
     ) -> None: ...
     @property
     def entity(self): ...