Bump up contrast of NotificationInfo.Secondary

On a white background, the contrast needs to be at least 4.5

Test: Accessibility scanner
Fixes: 134900492
Change-Id: Ic03484bb00aa6ace6edd6b34eed34e2134f38340
diff --git a/packages/SystemUI/res/values/styles.xml b/packages/SystemUI/res/values/styles.xml
index b387793..2f1770a 100644
--- a/packages/SystemUI/res/values/styles.xml
+++ b/packages/SystemUI/res/values/styles.xml
@@ -450,7 +450,7 @@
 
     <style name="TextAppearance.NotificationInfo.Secondary">
         <item name="android:textSize">14sp</item>
-        <item name="android:alpha">0.54</item>
+        <item name="android:alpha">0.62</item>
     </style>
 
     <style name="TextAppearance.NotificationInfo.Title">