ci: use proper job syntax for Windows

[XVilka]

A blind fix, should fix this problem:

ParserError: D:\a\_temp\06b4544d-38a3-4a20-aba1-1a6522b4acd4.ps1:2
Line |
   2 |  if [ windows-latest != 'ubuntu-latest' ]; then
     |    ~
     | Missing '(' after 'if' in if statement.

Error: Process completed with exit code 1.

https://github.com/capstone-engine/capstone/actions/runs/5606238975/jobs/10256193870#step:6:58

cc @Rot127 @kabeor

Ideally, thought, it's better to switch to cibuildwheel: #2066 (comment)

[kabeor]

Thnaks.

Ideally, thought, it's better to switch to cibuildwheel: #2066 (comment)

Good idea, consider using this.