[Perl/perl5] 5dabdc: use the cygwin install action instead of choco

[Tony Cook via perl5-changes]

  Branch: refs/heads/cygwin-ci-setup-rework
  Home:   https://github.com/Perl/perl5
  Commit: 5dabdc140e3d235eb576af502415f5953a84f9b9
      
https://github.com/Perl/perl5/commit/5dabdc140e3d235eb576af502415f5953a84f9b9
  Author: Tony Cook <t...@develop-help.com>
  Date:   2022-06-20 (Mon, 20 Jun 2022)

  Changed paths:
    M .github/workflows/testsuite.yml

  Log Message:
  -----------
  use the cygwin install action instead of choco