feat(pipx-update): add quiet flag for pipx upgrade-all on version 1.4.0+

[crrlcx]

This commit introduces conditional logic to the run_pipx_update function that checks the installed version of pipx. If the version is 1.4.0 or higher, the --quiet argument is added to the pipx upgrade-all command to suppress non-critical output during the upgrade process, adhering to the new feature introduced in pipx 1.4.0 as per the documentation (https://pipx.pypa.io/stable/docs/#pipx-upgrade-all). This change aims to make the upgrade process less verbose and more manageable in automated scripts or CI/CD pipelines where log brevity is beneficial.

Standards checklist:

• The PR title is descriptive.
• I have read CONTRIBUTING.md
• The code compiles (cargo build)
• The code passes rustfmt (cargo fmt)
• The code passes clippy (cargo clippy)
• The code passes tests (cargo test)
• Optional: I have tested the code myself

For new steps

• Optional: Topgrade skips this step where needed
• Optional: The --dry-run option works with this step
• Optional: The --yes option works with this step if it is supported by
  the underlying command

If you developed a feature or a bug fix for someone else and you do not have the
means to test it, please tag this person here.

[SteveLauC]

Thanks!