Revert "chore(deps): bump kotlin from 2.3.10 to 2.3.20"

This reverts commit d2cce60.

Breaks CodeQL
See 20742

> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.btapi.BuildToolsApiCompilationWork
   > Kotlin version 2.3.20 is too recent. CodeQL currently supports versions below 2.3.20

Author: david-allison

gradle/libs.versions.toml

@@ -90,7 +90,7 @@ androidTestJunit = "1.3.0"
 # https://github.com/junit-team/junit5/releases/
 junit = "6.0.3"
 # https://github.com/JetBrains/kotlin/releases/
-kotlin = '2.3.20'
+kotlin = '2.3.10'
 # https://github.com/Kotlin/kotlinx.serialization/releases
 kotlinxSerializationJson = "1.11.0"
 ktlintGradlePlugin = "14.2.0"