fix: Correctly detect older versions of powershell in bug-report

[chipbuster]

Description

Will lead to correct detection of older versions of powershell using starship bug-report. Special-cases the version code on powershell (can be extended to any shell, but all the others support --version for now).

Has been tested in a Windows VM against powershell 5.1 and the most recent version of pwsh available on the store.

Motivation and Context

Closes #3531

Screenshots (if appropriate):

How Has This Been Tested?

• I have tested using MacOS
• I have tested using Linux
• I have tested using Windows

Checklist:

• I have updated the documentation accordingly.
• I have updated the tests accordingly.

[chipbuster]

An interesting point I discovered while testing this: bug-report currently assumes that you've already run starship init in order to get its shell info. Given that we're not in a performance-constrained path, it might be an interesting project to use some sort of process information (e.g. chase the implicit parent-process-linked-list) to try to find shell information.

[andytom]

Thank you for your contribution @chipbuster and thank you for the review @davidkna .