Update Ironbank to v18.10.3

This MR contains the following updates:

Package	Update	Change
ironbank/gitlab/gitlab/gitlab-webservice (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/certificates (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitaly (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-base (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-container-registry (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-exporter (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-mailroom (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-pages (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-shell (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-sidekiq (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-toolbox (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-webservice (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/gitlab-workhorse (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/kas (source)	patch	18.10.1 -> 18.10.3
registry1.dso.mil/ironbank/gitlab/gitlab/kubectl (source)	patch	18.10.1 -> 18.10.3

Complete MR checklist

Assignee

• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

Add supporting info below

k3d-dev upgrade test successful (9.10.1-bb.0 → 9.10.3-bb.0):

Reviewer only

• Tested and Validated changes

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Configuration

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

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

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

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

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This MR was automatically generated by Renovate Bot.

Upgrade Notices

N/A

Linked issues

Closes #394 (closed)