Fix blocking call in cync (home-assistant#156782)

Author: epenet

homeassistant/components/cync/__init__.py

@@ -9,6 +9,7 @@
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.util.ssl import get_default_context
 
 from .const import (
     CONF_AUTHORIZE_STRING,
@@ -31,9 +32,13 @@ async def async_setup_entry(hass: HomeAssistant, entry: CyncConfigEntry) -> bool
         expires_at=entry.data[CONF_EXPIRES_AT],
     )
     cync_auth = Auth(async_get_clientsession(hass), user=user_info)
+    ssl_context = get_default_context()
 
     try:
-        cync = await Cync.create(cync_auth)
+        cync = await Cync.create(
+            auth=cync_auth,
+            ssl_context=ssl_context,
+        )
     except AuthFailedError as ex:
         raise ConfigEntryAuthFailed("User token invalid") from ex
     except CyncError as ex: