Bump AOSP dialer version number from 2.3.08 to 2.3.09

Bug: 25813431
Change-Id: Ib5963498041c960bda0cfb6a0189ed0dd836393c
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 7565aee..16be872 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -17,8 +17,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.dialer"
     coreApp="true"
-    android:versionCode="20308"
-    android:versionName="2.3.08">
+    android:versionCode="20309"
+    android:versionName="2.3.09">
 
     <uses-sdk
         android:minSdkVersion="23"