update api

Author: Alex Decker

dropshots-gradle-plugin/api/dropshots-gradle-plugin.api

@@ -24,7 +24,7 @@ public abstract class com/dropbox/dropshots/PullScreenshotsTask : org/gradle/api
 	protected abstract fun getExecOperations ()Lorg/gradle/process/ExecOperations;
 	protected abstract fun getFileOperations ()Lorg/gradle/api/file/FileSystemOperations;
 	public abstract fun getOutputDirectory ()Lorg/gradle/api/file/DirectoryProperty;
-	public abstract fun getReferenceOutputDirectory ()Lorg/gradle/api/file/DirectoryProperty;
+	public abstract fun getReferenceOutputDirectory ()Lorg/gradle/api/provider/Property;
 	public abstract fun getScreenshotDir ()Lorg/gradle/api/provider/Property;
 	public abstract fun getShouldWriteReferences ()Lorg/gradle/api/provider/Property;
 	public final fun pullScreenshots ()V