ci: refresh with latest 'lcitool manifest'
Two major changes
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There are no longer separate 'prebuilt' and 'local' jobs. The rules dynamically decide whether to use a prebuilt container or not.
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The cirrus job can dynamically substitute env variables so the local override of the cirrus job can go away. This fixes the running of cirrus jobs in merge requests due to the outdated rules in the local override.