FixPR.yml: Use cargo fetch --target $(rustc --print host-tuple)

[oech3]

No description provided.

[sylvestre]

sorry but the why isn't clear to me?!

[oech3]

If we don't have it, cargo DLs many non-platform specific crates.

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/tty/tty-eof. tests/tty/tty-eof is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/timeout/timeout (fails in this run but passes in the 'main' branch)

[sylvestre]

ok, thanks
update the commit message to explain this please

[oech3]

Updated the commit msg

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/timeout/timeout (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/dd/nocache_eof is no longer failing!

[oech3]

But cargo fetch is not used at any other place and it seems this is existing just for cleaner log.
I think we can just remove them (or if cleaner log is important, we should do it at everythere).