Update vinyl/upgrade test

A new record type has been added to vylog by commit 353bcdc5
("Rework space truncation"), VY_LOG_TRUNCATE_INDEX. Update the test.

test/vinyl/suite.cfg

@@ -3,6 +3,7 @@
         "edge": {"index_options": {"range_size": 1, "page_size": 1}}
     },
     "upgrade.test.lua": {
-        "1.7.4": {"version": "1.7.4"}
+        "1.7.4": {"version": "1.7.4"},
+        "1.7.4-126": {"version": "1.7.4-126"}
     }
 }