🌱 Bump CAPI to v1.9.3

[mboersma]

/kind cleanup

What this PR does / why we need it:

Updates CAPI to v1.9.3.

Which issue(s) this PR fixes:

Fixes #311

Special notes for your reviewer:

See controller-runtime v0.19 release notes: https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.19.0
See CAPI 1.8 - 1.9 migration guide: https://github.com/kubernetes-sigs/cluster-api/blob/main/docs/book/src/developer/providers/migrations/v1.8-to-v1.9.md
CAPZ's PR, for comparison: kubernetes-sigs/cluster-api-provider-azure#5316
CAPA's PR, for comparison: kubernetes-sigs/cluster-api-provider-aws#5209

[mboersma]

/hold

I think we should merge #337 first, and maybe cut a CAAPH release with that before rebasing and merging this.

[mboersma]

/hold cancel

[k8s-ci-robot]

@mboersma: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-addon-provider-helm-apidiff-main	717d4be	link	false	/test pull-cluster-api-addon-provider-helm-apidiff-main

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[mboersma]

/assign @Jont828

This is passing but for the API diff, which I think is unavoidable. Let me know what you think.

[Jont828]

I'm okay with the API diff given that it's just caused by the controller runtime version bump and not a change to our API.

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Jont828, mboersma

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