Ignore dependencies with unsupported Python versions during universal lock #4102
Description
If the user has requires-python = ">= 3.7", we should be able to prune dependencies with (e.g.) flask ; python_version == '3.3'.
{{ message }}
If the user has requires-python = ">= 3.7", we should be able to prune dependencies with (e.g.) flask ; python_version == '3.3'.