chore(core-deps): update Kotlin version to 2.2.20, working around https://youtrack.jetbrains.com/issue/KT-80974/False-positive-deprecation-warning-on-overrides-in-Kotlin-2.2.20

Author: DanySK

alchemist-implementationbase/src/main/kotlin/it/unibo/alchemist/model/timedistributions/MoleculeControlledTimeDistribution.kt

@@ -49,6 +49,8 @@ constructor(
     val errorDistribution: RealDistribution? = null,
 ) : AnyRealDistribution<T>(
     start,
+
+    @Suppress("OVERRIDE_DEPRECATION")
     object : RealDistribution {
         /*
          * Unknown values

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ graphstream = "2.0"
 junit = "5.13.4"
 konf = "1.1.2"
 kotest = "6.0.3"
-kotlin = "2.2.10"
+kotlin = "2.2.20"
 kotlinx-coroutines = "1.10.2"
 ktor = "3.3.0"
 mockito = "5.19.0"