Update CICD-base.yaml

[nwiltsie]

I found another one!

I did have to make one change to add the encoding='utf-8' argument to open() to make pylint happy.

https://pylint.readthedocs.io/en/latest/user_guide/messages/warning/unspecified-encoding.html

For sanity I confirmed that the default encoding used in the docker image is indeed UTF-8:

$ docker run -it --rm --entrypoint /bin/bash ghcr.io/uclahs-cds/pipeval:4.0.0-rc.2
bldocker@e90e52ddfca8:/tool$ python3 -c "import locale; print(locale.getpreferredencoding())"
UTF-8