* Update kotlin and related dependencies * Reset back Kotlinx serialization to `v1.6.3` since we can't use `1.7.x` until we upgrade to Kotlin 2.0 --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: Jorge Martín <jorgem@element.io>