Changed the way the fingerprint icon is included in the credential se…

…lector list, to stop Gradle from failing on Github

play-services-fido/core/src/main/res/layout/fido_credential_selector_list_item.xml

@@ -24,7 +24,7 @@
  android:layout_marginTop="8dp"
  app:layout_constraintStart_toStartOf="parent"
  app:layout_constraintTop_toTopOf="parent"
- app:srcCompat="@drawable/ic_fido_fingerprint"
+ android:src="@drawable/ic_fido_fingerprint"
  android:contentDescription="@string/credential_icon_description" />
 
  <LinearLayout