chore: sync librarian.yaml with generation_config.yaml #19550

Job	Run time
group_id_check_for_maps_libraries	9m 49s
gapic-bom	2m 22s
generate-readme	1m 14s
owlbot-yaml	1m 20s
gitignore_correctness	1m 38s
package_name_check	1m 11s
root-pom	2m 11s
owlbot-py	1m 27s
	21m 12s

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