Increase stress test query timeout

Reviewers: teon.banek, ipaljak

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D2657

tests/stress/continuous_integration

@@ -164,7 +164,7 @@ cmd = [args.memgraph, "--bolt-num-workers=" + str(THREADS),
        "--storage-snapshot-retention-count=1",
        "--storage-wal-enabled=true",
        "--storage-recover-on-startup=false",
-       "--query-execution-timeout-sec=600"]
+       "--query-execution-timeout-sec=1200"]
 if not args.verbose:
     cmd += ["--min-log-level", "1"]
 if args.log_file: