Update dependency com.slack.cli:kotlin-cli-util to v3

[slack-oss-bot]

This PR contains the following updates:

Package	Type	Update	Change
com.slack.cli:kotlin-cli-util	dependencies	major	2.6.3 -> 3.0.0

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Release Notes

slackhq/kotlin-cli-util (com.slack.cli:kotlin-cli-util)

### [`v3.0.0`](https://redirect.github.com/slackhq/kotlin-cli-util/blob/HEAD/CHANGELOG.md#300) [Compare Source](https://redirect.github.com/slackhq/kotlin-cli-util/compare/2.6.3...3.0.0) *2024-09-21* - **New**: Add `GradleTestFixturesMigratorCli` via `migrate-gradle-test-fixtures` command. - **New**: Add `multipleSet()` clikt extension. - **Breaking change**: Update to Clikt `5.0.0`. - Update to Kotlin `2.0.20`. - Update to Bugsnag `3.7.1`. - Update to Okio `3.9.1`. - Update to kotlinx-serialization `1.7.3`. - Update to xmlutil `0.90.1`. - Update to MoshiX `0.28.0`. - Update to slf4j-nop `2.0.16`.

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