Add new arguments to admin.users.list API method

[seratch]

This pull request adds two newly added options to https://api.slack.com/methods/admin.users.list

Category (place an x in each of the [ ])

• [ ] bolt (Bolt for Java)
• [ ] bolt-{sub modules} (Bolt for Java - optional modules)
• [x] slack-api-client (Slack API Clients)
• [ ] slack-api-model (Slack API Data Models)
• [ ] *slack-api--kotlin-extension** (Kotlin Extensions for Slack API Clients)
• [ ] slack-app-backend (The primitive layer of Bolt for Java)

Requirements

Please read the Contributing guidelines and Code of Conduct before creating this issue or pull request. By submitting, you agree to those rules.

[codecov[bot]]

Codecov Report

Merging #1230 (5c0d8da) into main (5222c91) will decrease coverage by 0.19%. The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #1230      +/-   ##
============================================
- Coverage     74.72%   74.54%   -0.19%     
+ Complexity     4071     4062       -9     
============================================
  Files           437      437              
  Lines         12855    12857       +2     
  Branches       1298     1298              
============================================
- Hits           9606     9584      -22     
- Misses         2491     2512      +21     
- Partials        758      761       +3     

Files	Coverage Δ
...java/com/slack/api/methods/RequestFormBuilder.java	87.23% <100.00%> (+0.01%)	:arrow_up:

... and 3 files with indirect coverage changes

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