Update minSdkVersion and targetSdkVersion.

Bug: 5357790
Change-Id: I295639ff014090b95ce7eae8fcdb32a602594e6d
diff --git a/samples/VoicemailProviderDemo/AndroidManifest.xml b/samples/VoicemailProviderDemo/AndroidManifest.xml
index 558dbf7..f70c248 100644
--- a/samples/VoicemailProviderDemo/AndroidManifest.xml
+++ b/samples/VoicemailProviderDemo/AndroidManifest.xml
@@ -23,8 +23,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     android:versionCode="1" android:versionName="1.0" package="com.example.android.voicemail">
 
-    <uses-sdk android:minSdkVersion="13"
-              android:targetSdkVersion="13" />
+    <uses-sdk android:minSdkVersion="14"
+              android:targetSdkVersion="14" />
 
     <uses-permission android:name="com.android.voicemail.permission.ADD_VOICEMAIL" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />