Small improvements in the dependency substitution code

settings.gradle.kts

@@ -1,3 +1,5 @@
+import java.util.Properties
+
 include(":app")
 
 pluginManagement {
@@ -11,8 +13,8 @@ pluginManagement {
 }
 
 // Load properties from local.properties
-val properties = java.util.Properties().apply {
-    val location = file("local.properties")
+val properties = Properties().apply {
+    val location = File("local.properties")
     if (location.exists())
         load(location.inputStream())
 }