Pin ironic image for the quick-start

[lentzi90]

After metal3-io/ironic-image#479 was merged, the default changed to not use inspector. This breaks the quick-start guide since it is using BareMetalOperator v0.5.0 that assumes inspector is used.
We should pin the ironic-image to v24.0.0 to fix this and avoid similar issues going forward.

Add the following to the ironic kustomization in the quick-start:

images:
- name: quay.io/metal3-io/ironic
  newTag: v24.0.0

[lentzi90]

/triage accepted
/good-first-issue

[metal3-io-bot]

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In response to this:

/triage accepted
/good-first-issue

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