Use isinstance instead of type

Co-authored-by: Ivana Kellyerova <ivana.kellyerova@sentry.io>

sentry_sdk/integrations/aws_lambda.py

@@ -140,7 +140,7 @@ def sentry_handler(aws_event, aws_context, *args, **kwargs):
             headers = request_data.get("headers", {})
             # Some AWS Services (ie. EventBridge) set headers as a list
             # or None, so we must ensure it is a dict
-            if type(headers) is not dict:
+            if not isinstance(headers, dict):
                 headers = {}
 
             transaction = continue_trace(