Update plugin org.jlleitschuh.gradle.ktlint to v12

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jlleitschuh.gradle.ktlint	11.6.1 -> 12.0.3

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Configuration

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🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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