Update VLCKit and CI

This updates VLCKit to the latest version and uses the Catalina builders for compatibility.

changed milestone to %3.3.0

mentioned in merge request !258 (closed)

enabled an automatic merge when the pipeline for ccb57f19 succeeds

mentioned in issue #933 (closed)

added 1 commit

• 848effbf - Use Catalina builders for CI

Compare with previous version

enabled an automatic merge when the pipeline for 848effbf succeeds

added 1 commit

• 2d3c3293 - Use Catalina builders for CI

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enabled an automatic merge when the pipeline for 2d3c3293 succeeds

merged

added Maintenance label

added libvlc/Core label

added CI label