chore(images): pin ubuntu version #9479

Job	Run time
check	11m 20s
gen_e2e_matrix	1s
test	9m 20s
test_e2e	0s
test_e2e_env (multizone, v1.28.1-k3s1, amd64, 1, flannel, false) / e2e (0)	14m 0s
test_e2e_env (kubernetes, v1.28.1-k3s1, amd64, 1, flannel, false) / e2e (0)	13m 51s
test_e2e_env (universal, kind, amd64, 1, flannel, false) / e2e (0)	10m 25s
distributions	12m 51s
	1h 11m 48s

Provide feedback