BUG: CI cannot create benchmark environments with Cython < 0.29.24

[attack68]

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the master branch of pandas.

Reproducible Example

asv continuous -f 1.1 -E virtualenv upstream/master HEAD -b style.Render

RuntimeError: Cannot cythonize with old Cython version (0.29.21 installed, needs 0.29.24)

Issue Description

Needed to update asv.conf.json to get this to work.

Expected Behavior

probably need to update dependency verisons.

Installed Versions

master at 17 Oct.

[simonjayhawkins]

benchmarks for previous versions are run from master so fix does not need backport.