FS-1668: bump tornado lib to be able to run tests

Author: chpedersen

requirements.txt

@@ -25,7 +25,7 @@ six==1.16.0
 sniffio==1.2.0
 sqlalchemy==1.4.15
 tabulate==0.8.9
-tornado==5.1.1
+tornado==6.5.1
 typing-extensions==4.3.0
 ujson==2.0.3
 urllib3==1.26.4