Bump kotlin from 1.7.21 to 1.8.20

build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-    val kotlinVersion = "1.7.21"
+    val kotlinVersion = "1.8.20"
     id("com.android.application") version "7.4.2" apply (false)
     id("org.jetbrains.kotlin.android") version kotlinVersion apply (false)
     id("org.jetbrains.kotlin.kapt") version kotlinVersion apply (false)

uhabits-android/build.gradle.kts

@@ -94,7 +94,7 @@ android {
 
 dependencies {
     val daggerVersion = "2.48"
-    val kotlinVersion = "1.7.21"
+    val kotlinVersion = "1.8.20"
     val kxCoroutinesVersion = "1.7.3"
     val ktorVersion = "1.6.8"
     val espressoVersion = "3.5.1"

uhabits-server/build.gradle.kts

@@ -38,7 +38,7 @@ application {
 
 dependencies {
     val ktorVersion = "1.6.8"
-    val kotlinVersion = "1.7.21"
+    val kotlinVersion = "1.8.20"
     val logbackVersion = "1.4.9"
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion")
     implementation("io.ktor:ktor-server-netty:$ktorVersion")