Update cygwin/cygwin-install-action action to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
cygwin/cygwin-install-action	action	major	v4 -> v5

---

Release Notes

cygwin/cygwin-install-action (cygwin/cygwin-install-action)

v5

Compare Source

What's Changed

• Drop the -g/--upgrade-also from the options used to invoke setup
• Use action/checkout v4 instead of v2 in tests by @​mlocati in https://github.com/cygwin/cygwin-install-action/pull/16
• Add allow-test-packages option by @​gstrauss in https://github.com/cygwin/cygwin-install-action/pull/12
• Check hash of downloaded setup by @​mlocati in https://github.com/cygwin/cygwin-install-action/pull/17

New Contributors

• @​mlocati made their first contribution in https://github.com/cygwin/cygwin-install-action/pull/16
• @​gstrauss made their first contribution in https://github.com/cygwin/cygwin-install-action/pull/12

Full Changelog: cygwin/cygwin-install-action@v4...v5

---

Configuration

📅 Schedule: Branch creation - "after 5am and before 8am on Wednesday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.