Bump urllib3 from 2.5.0 to 2.6.0 in /utils/git

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.5.0...2.6.0)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

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