ci: bring the dependencies check back #18245

Job	Run time
gitignore_correctness	1m 6s
gapic-bom	2m 1s
owlbot-py	1m 13s
owlbot-yaml	1m 3s
package_name_check	1m 7s
group_id_check_for_maps_libraries	8m 8s
generate-readme	1m 9s
root-pom	1m 45s
	17m 32s

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