Update Ironbank

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/opensource/istio/install-cni	minor	1.17.3 -> 1.18.1
registry1.dso.mil/ironbank/opensource/istio/pilot	minor	1.17.3 -> 1.18.1
registry1.dso.mil/ironbank/opensource/istio/proxyv2	minor	1.17.3 -> 1.18.1
registry1.dso.mil/ironbank/tetrate/istio/install-cni	minor	1.17.3-tetratefips-v0 -> 1.18.1-tetratefips-v0
registry1.dso.mil/ironbank/tetrate/istio/pilot	minor	1.17.3-tetratefips-v0 -> 1.18.0-tetratefips-v0
registry1.dso.mil/ironbank/tetrate/istio/proxyv2	minor	1.17.3-tetratefips-v0 -> 1.18.0-tetratefips-v0

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Configuration

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

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

👻 Immortal: This MR will be recreated if closed unmerged. Get config help if that's undesired.

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This MR has been generated by Renovate Bot.

Relates #105 (closed)