settings: AppListRetriever: Switch to lowercase() method

W: 'toLowerCase(Locale): String' is deprecated. Use lowercase() instead.

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>
diff --git a/app/src/main/java/com/stevesoltys/seedvault/settings/AppListRetriever.kt b/app/src/main/java/com/stevesoltys/seedvault/settings/AppListRetriever.kt
index cae5c31..29cb923 100644
--- a/app/src/main/java/com/stevesoltys/seedvault/settings/AppListRetriever.kt
+++ b/app/src/main/java/com/stevesoltys/seedvault/settings/AppListRetriever.kt
@@ -106,7 +106,7 @@
                 time = time,
                 status = status
             )
-        }.sortedBy { it.name.toLowerCase(locale) }
+        }.sortedBy { it.name.lowercase(locale) }
     }
 
     private fun getNotAllowedApps(): List<AppStatus> {
@@ -120,7 +120,7 @@
                 time = 0,
                 status = FAILED_NOT_ALLOWED
             )
-        }.sortedBy { it.name.toLowerCase(locale) }
+        }.sortedBy { it.name.lowercase(locale) }
     }
 
     private fun getIcon(packageName: String): Drawable = when (packageName) {