init.rc: start update_verifier instead of update_verifier_nonencrypted

The "update_verifier_nonencrypted" service is being replaced with simply
"update_verifier", so update init.rc accordingly.

Bug: 208476087
Test: presubmit
Change-Id: I58f3fb25167ff7d3679c72e5e9c012f02fa5b516
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 4f3959f..cdf67b9 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -1059,7 +1059,7 @@
 on zygote-start
     wait_for_prop odsign.verification.done 1
     # A/B update verifier that marks a successful boot.
-    exec_start update_verifier_nonencrypted
+    exec_start update_verifier
     start statsd
     start netd
     start zygote