CI: Avoid timeouts in 38 build (pandas-dev#29185)

Author: WillAyd

ci/build38.sh

@@ -9,7 +9,7 @@ pip install python-dateutil pytz cython pytest pytest-xdist hypothesis
 pip install --pre -f https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com/ numpy
 
 python setup.py build_ext -inplace
-python -m pip install --no-build-isolation -e .
+python -m pip install -v --no-build-isolation -e .
 
 python -c "import sys; print(sys.version_info)"
 python -c "import pandas as pd"