ci: GitLab `-j6` #24311

Job	Run time
linux_ubuntu	24m 53s
linux_ubuntu_extra (ubuntu2204, 20)	21m 19s
linux_ubuntu_extra (ubuntu2204_clang, 20)	23m 50s
macos	15m 26s
linux_physmon	15m 17s
linux_examples_test	11m 7s
linux_physmon_perf_report	0s
	1h 51m 52s

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