Update all dependencies (major)

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	Age	Adoption	Passing	Confidence
actions/checkout	action	major	v3 -> v4
actions/setup-java	action	major	v3 -> v4
actions/upload-artifact	action	major	v3 -> v4
gradle/gradle-build-action	action	major	v2 -> v3
peaceiris/actions-gh-pages	action	major	v3 -> v4
io.kotest.multiplatform	plugin	major	5.6.2 -> 6.0.0-LOCAL
org.jetbrains.kotlin.jvm	plugin	major	1.8.22 -> 2.0.21
org.jetbrains.kotlin.multiplatform	plugin	major	1.8.22 -> 2.0.21

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Release Notes

actions/checkout (actions/checkout)

v4

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• Bump the minor-npm-dependencies group across 1 directory with 4 updates by @​dependabot in https://github.com/actions/checkout/pull/1739
• Bump actions/checkout from 3 to 4 by @​dependabot in https://github.com/actions/checkout/pull/1697
• Check out other refs/* by commit by @​orhantoy in https://github.com/actions/checkout/pull/1774
• Pin actions/checkout's own workflows to a known, good, stable version. by @​jww3 in https://github.com/actions/checkout/pull/1776

actions/setup-java (actions/setup-java)

v4

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actions/upload-artifact (actions/upload-artifact)

v4

Compare Source

gradle/gradle-build-action (gradle/gradle-build-action)

v3

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peaceiris/actions-gh-pages (peaceiris/actions-gh-pages)

v4

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