Address some deprecation warnings

app/src/main/java/exh/uconfig/EHConfigurator.kt

@@ -65,7 +65,7 @@ class EHConfigurator(val context: Context) {
         val hathPerks = EHHathPerksResponse()
 
         perksPage.select(".stuffbox tr").forEach {
-            val name = it.child(0).text().toLowerCase(Locale.getDefault())
+            val name = it.child(0).text().lowercase(Locale.getDefault())
             val purchased = it.child(2).getElementsByTag("form").isEmpty()
 
             when (name) {

app/src/main/java/exh/uconfig/EhUConfigBuilder.kt

@@ -14,7 +14,7 @@ class EhUConfigBuilder {
         configItems += when (
             preferences.imageQuality()
                 .get()
-                .toLowerCase(Locale.getDefault())
+                .lowercase(Locale.getDefault())
         ) {
             "ovrs_2400" -> Entry.ImageSize.`2400`
             "ovrs_1600" -> Entry.ImageSize.`1600`