Update to Kotlin 1.5.20

- Updated versions.kotlin to 1.5.20
    - Changelog for 1.5.20: https://kotlinlang.org/docs/whatsnew1520.html
    - Changelog for 1.5.0: https://kotlinlang.org/docs/whatsnew15.html
    - Changelog for 1.4.30: https://kotlinlang.org/docs/whatsnew1430.html
- Updated kotlinx-datetime from 0.1.1 to 0.2.1 since Kotlin 1.5.0 depends on datetime > 0.2.0
    - Due to the changes to the experimental Duration inline value class; see: Kotlin/kotlinx-datetime#108
- Adjusted tests with the changes due to hardcoded values of some changes around the Kotlin JS/IR and Legacy JS apis

Signed-off-by: Antal János Monori <[email protected]>

Author: anthonymonori

buildSrc/src/main/kotlin/Dependencies.kt

@@ -5,7 +5,7 @@ val kmpJsEnabled = System.getProperty("kjs", "true").toBoolean()
 val kmpNativeEnabled = System.getProperty("knative", "true").toBoolean()
 
 object versions {
-  val kotlin = "1.4.20"
+  val kotlin = "1.5.20"
   val jmhPlugin = "0.5.0"
   val animalSnifferPlugin = "1.5.0"
   val dokka = "1.4.20"
@@ -46,7 +46,7 @@ object deps {
       val js = "org.jetbrains.kotlin:kotlin-test-js"
     }
 
-    val time = "org.jetbrains.kotlinx:kotlinx-datetime:0.1.1"
+    val time = "org.jetbrains.kotlinx:kotlinx-datetime:0.2.1"
   }
 
   object jmh {

okio/src/commonTest/kotlin/okio/AbstractFileSystemTest.kt

@@ -58,8 +58,8 @@ abstract class AbstractFileSystemTest(
     val cwdString = cwd.toString()
     assertTrue(cwdString) {
       cwdString.endsWith("okio${Path.DIRECTORY_SEPARATOR}okio") ||
-        cwdString.endsWith("${Path.DIRECTORY_SEPARATOR}okio-parent-okio-jsLegacy-test") ||
-        cwdString.endsWith("${Path.DIRECTORY_SEPARATOR}okio-parent-okio-jsIr-test") ||
+        cwdString.endsWith("${Path.DIRECTORY_SEPARATOR}okio-parent-okio-js-legacy-test") ||
+        cwdString.endsWith("${Path.DIRECTORY_SEPARATOR}okio-parent-okio-js-ir-test") ||
         cwdString.contains("/CoreSimulator/Devices/") || // iOS simulator.
         cwdString == "/" // Android emulator.
     }