Merge pull request #89 from ccnmtl/dependabot/pip/urllib3-1.26.9

Bump urllib3 from 1.26.8 to 1.26.9

Author: sdreher

requirements.txt

@@ -15,7 +15,7 @@ six==1.16.0
 sly==0.4
 sympy==1.9
 typing-extensions==4.1.1
-urllib3==1.26.8
+urllib3==1.26.9
 Werkzeug==2.0.2
 zipp==3.6.0
 lark==1.1.2