Bump the common group across 1 directory with 2 updates

Bumps the common group with 2 updates in the /python/helpers directory: [flake8](https://github.com/pycqa/flake8) and [cython](https://github.com/cython/cython).


Updates `flake8` from 7.1.0 to 7.1.1
- [Commits](PyCQA/flake8@7.1.0...7.1.1)

Updates `cython` from 3.0.10 to 3.0.11
- [Release notes](https://github.com/cython/cython/releases)
- [Changelog](https://github.com/cython/cython/blob/master/CHANGES.rst)
- [Commits](cython/cython@3.0.10...3.0.11)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: common
- dependency-name: cython
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: common
...

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

python/helpers/requirements.txt

@@ -1,6 +1,6 @@
 pip==24.0
 pip-tools==7.4.1
-flake8==7.1.0
+flake8==7.1.1
 # TODO: Drop the conditions and use the latest version once we drop support for Python 3.8.
 hashin==1.0.2; python_version < '3.9'
 hashin==1.0.3; python_version >= '3.9'
@@ -11,4 +11,4 @@ poetry==1.8.5
 toml==0.10.2
 
 # Some dependencies will only install if Cython is present
-Cython==3.0.10
+Cython==3.0.11