Merge pull request #47 from ashtanko/renovate/kotlin

Update kotlin to v2.1.20

Author: ashtanko

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.1.10"          # https://github.com/JetBrains/kotlin
+kotlin = "2.1.20"          # https://github.com/JetBrains/kotlin
 coroutines = "1.10.1"      # https://github.com/Kotlin/kotlinx.coroutines
 junit = "5.12.0"           # https://junit.org/junit5 | https://central.sonatype.com/artifact/org.junit.jupiter/junit-jupiter
 mockk = "1.13.17"          # https://mockk.io | https://central.sonatype.com/search?q=mockk&smo=true