chore(deps): Update kotlin monorepo to v2.1.20 (#169)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ bouncycastle = "1.80"
 detekt = "1.23.8"
 dokka = "2.0.0"
 gradle = "1.3.0"
-kotlin = "2.1.10"
+kotlin = "2.1.20"
 
 [plugins]
 detekt = { id = "io.gitlab.arturbosch.detekt", version.ref = "detekt" }