chore: change ubuntu pinned version to ubuntu-lts-latest #932

Job	Run time
run_ci (ubuntu-24.04, 3.11, edx_notes_api+lms)	20m 10s
run_ci (ubuntu-24.04, 3.11, ecommerce+lms)	22m 19s
run_ci (ubuntu-24.04, 3.11, registrar+lms)	18m 4s
run_ci (ubuntu-24.04, 3.11, edx-exams+lms)	18m 20s
run_ci (ubuntu-24.04, 3.11, designer+lms)	20m 12s
run_ci (ubuntu-24.04, 3.11, xqueue)	3m 57s
run_ci (ubuntu-24.04, 3.11, analyticsapi+insights+lms)	22m 51s
run_ci (ubuntu-24.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	25m 27s
run_ci (ubuntu-24.04, 3.11, credentials+lms)	20m 12s
run_ci (ubuntu-24.04, 3.11, license-manager+lms)	17m 58s
run_ci (ubuntu-24.04, 3.11, discovery+lms+forum)	25m 47s
	3h 35m 17s

Provide feedback