Replace deprecated usages of max/min with maxOrNull/minOrNull

idea/idea-maven/src/org/jetbrains/kotlin/idea/maven/KotlinMavenArchetypesProvider.kt

@@ -105,7 +105,7 @@ class KotlinMavenArchetypesProvider(private val kotlinPluginVersion: String, pri
             }
 
     private fun chooseVersion(versions: List<MavenArchetype>): MavenArchetype? {
-        return versions.maxBy { MavenVersionComparable(it.version) }
+        return versions.maxByOrNull { MavenVersionComparable(it.version) }
     }
 
     private fun <R> connectAndApply(url: String, timeoutSeconds: Int = 15, block: (HttpURLConnection) -> R): R {

idea/idea-maven/src/org/jetbrains/kotlin/idea/maven/inspections/DifferentMavenStdlibVersionInspection.kt

@@ -73,7 +73,7 @@ class DifferentMavenStdlibVersionInspection : DomElementsInspection<MavenDomProj
     }
 
     private fun createFixes(project: MavenProject, versionElement: GenericDomValue<*>, versions: List<String>): List<SetVersionQuickFix> {
-        val bestVersion = versions.maxBy(::MavenVersionComparable)!!
+        val bestVersion = versions.maxByOrNull(::MavenVersionComparable)!!
         if (bestVersion == versionElement.stringValue) {
             return emptyList()
         }