add max_results param for get user id method

### Problem trying to solve

see https://github.com/pycontribs/jira/pull/1799

the _get_user_id method used a hardcoded value of maxResults=20 for the search_users method, causing it to exclude users beyond the first 20 search results

### Possible solution(s)

https://github.com/pycontribs/jira/pull/1799

### Alternatives

_No response_

### Additional Context

_No response_