Disable pip warnings/checks during requires install

[rmartin16]

Changes

• Disables some unnecessary (IMO) checks and feedback during app requires installation; specifically:
  • pip version checking
  • pip Python version compatibility

These are all spurious and unnecessary while building the app. I left them for briefcase dev, though, since Briefcase is literally installing in to the user's environment.

PR Checklist:

• All new features have been tested
• All new features have been documented
• I have read the CONTRIBUTING.md file
• I will abide by the code of conduct

[rmartin16]

hmm....seems pip on debian:bullseye is too old for --root-user-action....

Although, that brings up the fact we're using old versions of pip in the containers. It may be best to have the Dockerfiles update pip...

Briefcase already requires at least pip >= 23.1.1 and --root-user-action was introduced in 22.1.

[edit] removed --root-user-action and implemented this directly in the Dockerfiles

[freakboy3742]

👍