fix: update macOS image to latest and simplify colima start command #1097

Job	Run time
run_ci (ubuntu-24.04, 3.11, xqueue)	2m 15s
run_ci (ubuntu-24.04, 3.11, ecommerce+lms)	22m 26s
run_ci (ubuntu-24.04, 3.11, analyticsapi+insights+lms)	22m 5s
run_ci (ubuntu-24.04, 3.11, license-manager+lms)	17m 39s
run_ci (ubuntu-24.04, 3.11, registrar+lms)	18m 19s
run_ci (ubuntu-24.04, 3.11, discovery+lms+forum)	22m 41s
run_ci (ubuntu-24.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	24m 29s
run_ci (ubuntu-24.04, 3.11, edx-exams+lms)	17m 33s
run_ci (ubuntu-24.04, 3.11, edx_notes_api+lms)	18m 12s
run_ci (ubuntu-24.04, 3.11, designer+lms)	18m 8s
run_ci (ubuntu-24.04, 3.11, credentials+lms)	19m 9s
	3h 22m 56s

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