Merge pull request #463 from openreferral/dependabot/pip/urllib3-1.26.18

Bump urllib3 from 1.26.15 to 1.26.18

Author: kathryn-ods

requirements.txt

@@ -195,7 +195,7 @@ typing-extensions==4.5.0
     # via myst-parser
 uri-template==1.2.0
     # via jsonschema
-urllib3==1.26.15
+urllib3==1.26.18
     # via
     #   requests
     #   transifex-client