[staging-next] pytest-xprocess: 0.17.0 -> 0.17.1

[collares]

Motivation for this change

Should fix the Werkzeug failure at https://hydra.nixos.org/build/138612948, see pytest-dev/pytest-xprocess#61

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[SuperSandro2000]

I already fixed Werkzeug in staging. babb021#diff-7c765cc9768cdae049f8712b4ef719bc94ec8ec2e8df2dd50ddf14c6acd4e580

Does this replace the linked commit? If so we should remove the overwrite. Not sure what the best way here will be.

[collares]

@SuperSandro2000 You should keep your fix, because looking more carefully I think Werkzeug's testsuite only uses pytest-timeout, not pytest-xprocess, so I don't think my patch would help much. But this is breaking staging-next evaluation, so I think your fix should land there too? I don't know the procedure, to be honest.