CI: avoid DeprecationWarning in validate_min_versions_in_sync script
this warning is showing up in CI because of the extra whitespace here

https://github.com/pandas-dev/pandas/blob/09cb36710aab9d9a724602aa7ccfde33fbc51f63/scripts/tests/data/deps_expected_random.yaml#L41

which then goes to the `except` arm in 

https://github.com/pandas-dev/pandas/blob/ffc583966451fd26cdd4c350018362f6fadd02a3/pandas/util/version/__init__.py#L122-L125

which throws the warning
Thanks @MarcoGorelli 