Update dependency registry1.dso.mil/ironbank/google/golang/golang-1.18 to v1.18.8

This MR contains the following updates:

Package	Type	Update	Change
registry1.dso.mil/ironbank/google/golang/golang-1.18	ironbank-base	patch	1.18.7 -> 1.18.8
registry1.dso.mil/ironbank/google/golang/golang-1.18	final	patch	1.18.7 -> 1.18.8

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled due to failing status checks.

♻ Rebasing: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 Ignore: Close this MR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this MR, click this checkbox. ⚠ Warning: custom changes will be lost.

---

This MR has been generated by Renovate Bot.