Bump pip in /python/helpers in the pip group across 1 directory

Bumps the pip group with 1 update in the /python/helpers directory: [pip](https://github.com/pypa/pip).


Updates `pip` from 24.2 to 26.1.1
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@24.2...26.1.1)

---
updated-dependencies:
- dependency-name: pip
  dependency-version: '25.3'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

python/helpers/requirements.txt

@@ -1,4 +1,4 @@
-pip==24.2
+pip==26.1.1
 pip-tools==7.5.3
 flake8==7.3.0
 hashin==1.0.5