Bump version to 19.0.0 for 18-stable release

[ospk8s-branching-bot]

This PR updates the version to 19.0.0 in preparation for the 18-stable release.

Changes included:

• Makefile version bump
• hack/fake_minor_update.sh version update
• Workflow file updates for 18-stable

Generated automatically by the create-release-branch workflow.

[openshift-ci]

Hi @ospk8s-branching-bot[bot]. Thanks for your PR.

I'm waiting for a openstack-k8s-operators member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[github-actions]

OpenStackControlPlane CRD Size Report

Metric	Value
CRD JSON size	364822 bytes (356KB)
Base branch size	364822 bytes
Change	+0.00%
Status	yellow — growing

Threshold reference

Color	Range	Meaning
🟢 green	< 300KB	Comfortable
🟡 yellow	300–400KB	Growing
🟠 orange	400–750KB	Concerning
🔴 red	> 750KB	Approaching 1.5MB etcd limit (cut in half to allow space for update)

[stuggi]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ospk8s-branching-bot[bot], stuggi

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