Bump urllib3 from 2.5.0 to 2.6.0 in /utils/git (#7988)

Author: dependabot[bot]

utils/git/requirements_formatting.txt

@@ -46,7 +46,7 @@ requests==2.32.4
     # via pygithub
 toml==0.10.2
     # via darker
-urllib3==2.5.0
+urllib3==2.6.0
     # via requests
 wrapt==1.15.0
     # via deprecated