Update crazy-max/ghaction-import-gpg action to v5.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
crazy-max/ghaction-import-gpg	action	minor	v5.0.0 -> v5.1.0

---

Release Notes

crazy-max/ghaction-import-gpg

### [`v5.1.0`](https://togithub.com/crazy-max/ghaction-import-gpg/releases/tag/v5.1.0) [Compare Source](https://togithub.com/crazy-max/ghaction-import-gpg/compare/v5.0.0...v5.1.0) - Bump openpgp from 5.2.1 to 5.3.1 ([#​145](https://togithub.com/crazy-max/ghaction-import-gpg/issues/145)) - Bump [@​actions/core](https://togithub.com/actions/core) from 1.6.0 to 1.9.0 ([#​143](https://togithub.com/crazy-max/ghaction-import-gpg/issues/143))

---

Configuration

📅 Schedule: Branch creation - "after 9am" (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, click this checkbox.

---

This PR has been generated by Mend Renovate. View repository job log here.