Mark stars.* API methods as deprecated

[seratch]

see also: https://api.slack.com/changelog/2023-07-its-later-already-for-stars-and-reminders

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

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[codecov[bot]]

Codecov Report

Merging #1182 (ad8af30) into main (71b7032) will increase coverage by 0.00%. The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #1182   +/-   ##
=========================================
  Coverage     75.25%   75.26%           
- Complexity     4001     4002    +1     
=========================================
  Files           430      430           
  Lines         12528    12528           
  Branches       1261     1261           
=========================================
+ Hits           9428     9429    +1     
+ Misses         2353     2351    -2     
- Partials        747      748    +1     

Impacted Files	Coverage Δ
...slack/api/methods/impl/AsyncMethodsClientImpl.java	92.32% <ø> (ø)
.../com/slack/api/methods/impl/MethodsClientImpl.java	83.59% <ø> (ø)

... and 3 files with indirect coverage changes

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