Bump pip-tools from 5.5.0 to 6.0.1 in /python/helpers (#34)

Bumps [pip-tools](https://github.com/jazzband/pip-tools) from 5.5.0 to 6.0.1.
- [Release notes](https://github.com/jazzband/pip-tools/releases)
- [Changelog](https://github.com/jazzband/pip-tools/blob/master/CHANGELOG.md)
- [Commits](jazzband/pip-tools@5.5.0...6.0.1)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

python/helpers/requirements.txt

@@ -1,5 +1,5 @@
 pip==21.0.1
-pip-tools==5.5.0
+pip-tools==6.0.1
 flake8==3.9.0
 hashin==0.15.0
 pipenv==2020.11.15