fix(types): give defaut to as_json to be true as it's needed

Author: tharropoulos

src/typesense/async_/api_call.py

@@ -205,7 +205,7 @@ async def get(
         self,
         endpoint: str,
         entity_type: typing.Type[TEntityDict],
-        as_json: typing.Literal[True],
+        as_json: typing.Literal[True] = True,
         params: typing.Union[TParams, None] = None,
     ) -> TEntityDict:
         """
@@ -276,7 +276,7 @@ async def post(
         self,
         endpoint: str,
         entity_type: typing.Type[TEntityDict],
-        as_json: typing.Literal[True],
+        as_json: typing.Literal[True] = True,
         params: typing.Union[TParams, None] = None,
         body: typing.Union[TBody, None] = None,
     ) -> TEntityDict: