Fix codecov CI errors

[seratch]

This pull request resolves the CI error caused by the outdated codecov integration

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

• bolt (Bolt for Java)
• bolt-{sub modules} (Bolt for Java - optional modules)
• 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]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.93%. Comparing base (298b5aa) to head (375c008).
Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1304      +/-   ##
============================================
+ Coverage     74.57%   74.93%   +0.35%     
+ Complexity     4137     4131       -6     
============================================
  Files           443      443              
  Lines         13079    12786     -293     
  Branches       1319     1319              
============================================
- Hits           9754     9581     -173     
+ Misses         2564     2439     -125     
- Partials        761      766       +5     

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