Update another variant expected-result file.
This should have been updated in but it was overlooked.
Given the lack of complaints, I won't bother back-patching.
@@ -150,7 +150,9 @@ pg_advisory_unlock
t
step s1l: <... completed>
-error in steps s2_unlock s1l: ERROR: could not serialize access due to concurrent update
+key value
+
+1 1
starting permutation: s2b s1l s2u s2_blocker1 s2r s2_unlock
pg_advisory_lock
