feat: Upgrade Ubuntu version for provisioning tests. #731

Job	Run time
run_ci (ubuntu-24.04, 3.11, discovery+lms+forum)	20m 20s
run_ci (ubuntu-24.04, 3.11, registrar+lms)	16m 33s
run_ci (ubuntu-24.04, 3.11, ecommerce+lms)	20m 18s
run_ci (ubuntu-24.04, 3.11, edx_notes_api+lms)	16m 14s
run_ci (ubuntu-24.04, 3.11, credentials+lms)	16m 27s
run_ci (ubuntu-24.04, 3.11, xqueue)	2m 50s
run_ci (ubuntu-24.04, 3.11, analyticsapi+insights+lms)	20m 56s
run_ci (ubuntu-24.04, 3.11, designer+lms)	17m 25s
run_ci (ubuntu-24.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	22m 6s
run_ci (ubuntu-24.04, 3.11, license-manager+lms)	16m 30s
	2h 49m 39s

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