Updated fonts to Google Sans in Setup screens.

This change migrates the "All set" and Gesture Nav Tutorial screens to
use Google Sans fonts as aligned with SUW's design.

Before:
"All set" screen: https://screenshot.googleplex.com/7ptWroSfRiZLcRT.png
Gesture Nav Tutorial screen: https://screenshot.googleplex.com/6SuYs67NSD2WRkU.png

After:
"All set" screen: https://screenshot.googleplex.com/6UGrdR43h8aDJzU.png
Gesture Nav Tutorial screen: https://screenshot.googleplex.com/45NxPH2ezQsHxL4.png

Fix: 258241930
Test: Manual
Change-Id: I21cc19383f78e3d9e84b0d892cbd977f20b91e86

quickstep/res/values/styles.xml

@@ -41,7 +41,7 @@
         parent="TextAppearance.GestureTutorial">
         <item name="android:gravity">start</item>
         <item name="android:textColor">?android:attr/textColorPrimary</item>
-        <item name="android:fontFamily">google-sans-regular</item>
+        <item name="android:fontFamily">google-sans</item>
         <item name="android:letterSpacing">0.03</item>
         <item name="android:textSize">36sp</item>
         <item name="android:lineHeight">44sp</item>
@@ -106,6 +106,7 @@
         <item name="android:letterSpacing">0.02</item>
         <item name="android:textSize">16sp</item>
         <item name="android:textAllCaps">false</item>
+        <item name="android:fontFamily">google-sans-text-medium</item>
     </style>
 
     <style name="TextAppearance.GestureTutorial.CancelButtonLabel"