Update targetSdkVersion to 28

Bug: 79153175
Test: Compiled and verified that merged manifest had targetSdkVersion=28
PiperOrigin-RevId: 195145440
Change-Id: I12cde947d8fe8594f91bcc3dacdba6f9c72ac84a
diff --git a/java/com/android/voicemail/AndroidManifest.xml b/java/com/android/voicemail/AndroidManifest.xml
index 23c746a..d39dfee 100644
--- a/java/com/android/voicemail/AndroidManifest.xml
+++ b/java/com/android/voicemail/AndroidManifest.xml
@@ -18,7 +18,7 @@
 
   <uses-sdk
     android:minSdkVersion="24"
-    android:targetSdkVersion="27"/>
+    android:targetSdkVersion="28"/>
 
   <!-- Applications using this module should merge these permissions using android_manifest_merge -->