Update dependency urllib3 to v2

mend-for-github-com[bot] · web-flow · commit 7ed4add1694b · 2025-12-12T12:16:53.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -22,7 +22,7 @@ pytz==2021.1
 requests==2.25.1
 six==1.11.0
 tornado==6.1
-urllib3==1.22
+urllib3==2.6.0
 vonage==2.5.5
 websocket-client==0.48.0
 wrapt==1.12.1
