fix: ticker events returns composite_figi (#423)

fixes #422

Author: shooit

polygon/rest/models/tickers.py

@@ -213,7 +213,7 @@ def from_dict(d):
 @modelclass
 class TickerChangeResults:
     name: str
-    figi: str
+    composite_figi: str
     cik: str
     events: Optional[List[TickerChangeEvent]] = None
 

test_rest/mocks/vX/reference/tickers/META/events&types=ticker_change.json

@@ -1,7 +1,7 @@
 {
   "results":  {
     "name": "Meta Platforms, Inc. Class A Common Stock",
-    "figi": "BBG000MM2P62",
+    "composite_figi": "BBG000MM2P62",
     "cik": "0001326801",
     "events": [
       {
@@ -22,4 +22,4 @@
   },
   "status": "OK",
   "request_id": "8c911ff1-5ca8-41e8-9bbf-e625141caacc"
-}
+}

test_rest/test_tickers.py

@@ -242,7 +242,7 @@ def test_get_ticker_events_ticker_change(self):
         events = self.c.get_ticker_events(ticker="META", types="ticker_change")
         expected = TickerChangeResults(
             name="Meta Platforms, Inc. Class A Common Stock",
-            figi="BBG000MM2P62",
+            composite_figi="BBG000MM2P62",
             cik="0001326801",
             events=[
                 {