iserver-test: Fix upgrade config lazy rollover (#17500)

* Update upgrade-config.yaml since 8.19 and 9.1 no longer have the same apm-data resource version

* Add 9.2

Author: ericywl

integrationservertest/upgrade-config.yaml

@@ -13,7 +13,6 @@ lazy-rollover-with-exceptions:
   8.17:
   8.19:
   9.0:
-  # 8.19 and 9.1 have the same template due to
-  # https://github.com/elastic/elasticsearch/pull/128913.
   9.1:
-    - "8.19"
+  9.2:
+    - "9.1"