Merge pull request #544 from nexB/dependabot/pip/urllib3-1.26.18

Bump urllib3 from 1.26.17 to 1.26.18

Author: chinyeungli

requirements.txt

@@ -72,7 +72,7 @@ text-unidecode==1.3
 toml==0.10.2
 typecode==30.0.0
 typecode-libmagic==5.39.210531
-urllib3==1.26.17
+urllib3==1.26.18
 urlpy==0.5
 wcwidth==0.2.5
 webencodings==0.5.1