Correct Kotlin Version to 1.9.20

Change-Id: I1bd69d3c13685a57ac2623b8f62e12bf4429856c
diff --git a/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt b/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt
index cbffaaf..25d24e38 100644
--- a/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt
+++ b/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt
@@ -399,7 +399,7 @@
   const val guavaVersion = "32.1.2-jre"
   const val javassist = "3.29.2-GA"
   const val junitVersion = "4.13-beta-2"
-  const val kotlinVersion = "1.9.0"
+  const val kotlinVersion = "1.9.20"
   const val kotlinMetadataVersion = "2.0.0-Beta5"
   const val mockito = "2.10.0"
   const val smaliVersion = "3.0.3"