Merge pull request #490 from gprMax/dependabot/pip/urllib3-2.5.0

Bump urllib3 from 2.1.0 to 2.5.0

requirements.txt

@@ -111,7 +111,7 @@ tornado==6.5.1
 tqdm==4.67.1
 traitlets==5.7.1
 typing_extensions==4.9.0
-urllib3==2.1.0
+urllib3==2.5.0
 wcwidth==0.2.5
 webencodings==0.5.1
 websocket-client==0.58.0