use the latest Cython 0.29.x

this is likely unrelated to #8133 considering the
cython issue seems to only apply to cython 3.0.x.

requirements.d/development.lock.txt

@@ -8,5 +8,5 @@ pytest==7.4.3
 pytest-xdist==3.3.1
 pytest-cov==4.1.0
 pytest-benchmark==4.0.0
-Cython==0.29.36
+Cython==0.29.37
 python-dateutil==2.8.2