Maven duplicates removals

[KingBuzzer]

Remove some duplicate dependency declarations, some which produce build warnings.

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

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[seratch]

Thanks for improving the build settings! We'll merge this once we've confirmed all the tests pass.

[codecov]

Codecov Report

Merging #695 (3671993) into main (2146481) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main     #695      +/-   ##
============================================
- Coverage     77.31%   77.28%   -0.04%     
+ Complexity     3222     3221       -1     
============================================
  Files           360      360              
  Lines          9539     9539              
  Branches        913      913              
============================================
- Hits           7375     7372       -3     
- Misses         1622     1624       +2     
- Partials        542      543       +1     

Impacted Files	Coverage Δ	Complexity Δ
...va/com/slack/api/socket_mode/SocketModeClient.java	67.76% <0.00%> (-1.98%)	37.00% <0.00%> (-1.00%)

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[seratch]

Thanks a lot for the contribution 🎉