Bump pip from 24.2 to 25.3 in /python/helpers in the pip group

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


Updates `pip` from 24.2 to 25.3
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@24.2...25.3)

---
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==26.0
 pip-tools==7.5.2
 flake8==7.3.0
 hashin==1.0.5