Move from y/N to yes/No for overwriting images

[TheBlackKoala]

No description provided.

[Chroxvi]

Generally looks good!

Since this is really about making yes/no input consistent, I think we need to align your current changes with the way we ask the user to accept the Miniforge license, i.e.

• Also rename val to answer in

  cotainr/cotainr/pack.py

  Line 264 in 4763532

  val = input(license_text) # prompt user for acceptance of license terms

  and add a .lower() to the it.
• Add a parametrized test case of "Yes" (in addition to "yes") to

  cotainr/cotainr/tests/pack/test_conda_install.py

  Line 315 in 4763532

  monkeypatch.setattr("builtins.input", factory_mock_input("yes"))

  .

I wonder if we are at the stage where we should refactor this code into a common utility function for handling such yes/no inputs. It is very likely that we are going to ask users for acceptance of other licenses or conditions in the future. What do you think?