Bump ktorVersion from 1.6.3 to 1.6.4 (#93)

Author: dependabot[bot]

cloudkitclient-core/build.gradle.kts

@@ -12,7 +12,7 @@ kotlin {
 
     sourceSets {
         // Apache 2, https://github.com/ktorio/ktor/releases/latest
-        val ktorVersion = "1.6.3"
+        val ktorVersion = "1.6.4"
         commonMain {
             dependencies {
                 api("io.ktor:ktor-client-core:$ktorVersion")