fix: ensure 'AppInstallationAuth' closes its internal client

src/simple_github/auth.py

@@ -18,6 +18,10 @@ async def get_token(self) -> str:
         """Returns"""
         ...
 
+    async def close(self) -> None:
+        """Close the authentication if necessary."""
+        pass
+
 
 class TokenAuth(Auth):
     def __init__(self, token):
@@ -115,6 +119,10 @@ def __init__(
         self._client = Client(auth=self.app)
         self._generator = self._gen_installation_token()
 
+    async def close(self) -> None:
+        """Close the Client used to fetch the installation token."""
+        await self._client.close()
+
     async def _get_installation_id(self) -> str:
         """Return the app's installation id for owner.
 

src/simple_github/client.py

@@ -39,6 +39,7 @@ async def __aexit__(self, *excinfo):
         await self.close()
 
     async def close(self) -> None:
+        await self.auth.close()
         if self._gql_client:
             await self._gql_client.close_async()