Merge pull request #425 from ayharano/replace-httpx-post-data-with-co…

…ntent

Replace `httpx.post` `data` kwarg with `content`

rollbar/lib/_async.py

@@ -139,7 +139,7 @@ async def _post_api_httpx(path, payload_str, access_token=None):
  ) as client:
  resp = await client.post(
  url,
- data=payload_str,
+ content=payload_str,
  headers=headers,
  timeout=rollbar.SETTINGS.get('timeout', DEFAULT_TIMEOUT),
  )