Merge pull request #449 from gprMax/dependabot/pip/urllib3-2.2.2

Bump urllib3 from 2.2.1 to 2.2.2

requirements.txt

@@ -109,7 +109,7 @@ tornado==6.4.1
 tqdm==4.66.3
 traitlets==5.14.2
 typing_extensions==4.10.0
-urllib3==2.2.1
+urllib3==2.2.2
 wcwidth==0.2.13
 webencodings==0.5.1
 websocket-client==1.7.0