Fix #1311 entity.message is missing in Audit Logs API response

[seratch]

This pull request resolves #1311

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

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 74.83%. Comparing base (97144d6) to head (48b6ef7).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1312 +/- ## ============================================ - Coverage 74.84% 74.83% -0.01% + Complexity 4128 4127 -1 ============================================ Files 443 443 Lines 12786 12786 Branches 1319 1319 ============================================ - Hits 9570 9569 -1 - Misses 2452 2453 +1 Partials 764 764 ```

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