build(deps): bump cython from 0.29.10 to 0.29.11

Bumps [cython](https://github.com/cython/cython) from 0.29.10 to 0.29.11.
- [Release notes](https://github.com/cython/cython/releases)
- [Changelog](https://github.com/cython/cython/blob/master/CHANGES.rst)
- [Commits](cython/cython@0.29.10...0.29.11)

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

Author: dependabot-preview[bot]

build-requirements.txt

@@ -1 +1 @@
-cython==0.29.10
+cython==0.29.11