Update ktlint_version (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jlleitschuh.gradle.ktlint-idea	9.0.0 -> 11.6.1
org.jlleitschuh.gradle.ktlint	9.0.0 -> 12.1.1

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