Messaging: bump target SDK version to 29

Change-Id: I2067146755ddc73c0ac31cf2096d17adbd98d071

AndroidManifest.xml

@@ -18,7 +18,7 @@
     package="com.android.messaging"
     android:installLocation="internalOnly">
 
-    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="28" />
+    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="29" />
 
     <!-- Application holds CPU wakelock while working in background -->
     <uses-permission android:name="android.permission.WAKE_LOCK" />

tests/AndroidManifest.xml

@@ -17,7 +17,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.messaging.test" >
 
-    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="28"/>
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="29"/>
 
     <application android:label="Messaging Tests" >
         <uses-library android:name="android.test.runner" />