This TODO got added during our GHA refactoring a while ago, where I
thought it might make sense to run our itests in `bash`. We didn't do it
before the refactoring either. It seems good to keep them running in
`pwsh` instead, so lets just remove the TODO.
Investigation notes: Running in `bash` on Windows via `Git Bash` seems
like doing a lot of magic, especially with path handling. Things
[like](a02ed38e60/tests/installation/registry.ts (L143))
this break then, since `tar` even when using `Git Bash` [doesn't accept
a Windows
path](https://sourceforge.net/p/mingw/mailman/mingw-users/thread/54CE104A.7060108@hccnet.nl/).
Signed-off-by: Max Schmitt <max@schmitt.mx>
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