Upgrades this plugin to ktlint 1.6.0

What's Changed

• Verify fix for 423 with sample project by @jeremymailen in https://github.com/jeremymailen/kotlinter-gradle/pull/447
• Bump org.jmailen.kotlinter from 5.0.1 to 5.0.2 by @dependabot in https://github.com/jeremymailen/kotlinter-gradle/pull/448
• Bump org.jetbrains.kotlin.jvm from 2.1.20 to 2.1.21 by @dependabot in https://github.com/jeremymailen/kotlinter-gradle/pull/451
• Bump ktlint from 1.5.0 to 1.6.0 by @dependabot in https://github.com/jeremymailen/kotlinter-gradle/pull/450
• Release 5.1.0 by @jeremymailen in https://github.com/jeremymailen/kotlinter-gradle/pull/453

Full Changelog: https://github.com/jeremymailen/kotlinter-gradle/compare/5.0.2...5.1.0