ci(mergify): upgrade configuration to current format #887

Job	Run time
doc (docs)	1m 43s
test (py39, postgresql-file-upgrade-from-4.5)	2m 50s
check (build)	41s
doc (docs-gnocchi-web)	1m 39s
test (py39, mysql-file)	3m 6s
check (pep8)	40s
test (py39, mysql-file-sqlalchemy14)	3m 7s
test (py39, mysql-swift)	3m 27s
test (py39, mysql-s3)	3m 48s
test (py39, postgresql-file)	2m 49s
test (py39, postgresql-file-sqlalchemy14)	2m 58s
test (py39, postgresql-swift)	3m 21s
test (py39, postgresql-s3)	3m 18s
test (py311, postgresql-file-upgrade-from-4.5)	2m 42s
test (py311, mysql-file)	3m 0s
test (py311, mysql-file-sqlalchemy14)	2m 58s
test (py311, mysql-swift)	3m 25s
test (py311, mysql-s3)	3m 52s
test (py311, postgresql-file)	2m 45s
test (py311, postgresql-file-sqlalchemy14)	2m 48s
test (py311, postgresql-swift)	3m 13s
test (py311, postgresql-s3)	3m 28s
test (py312, mysql-ceph-upgrade-from-4.5)	2m 34s
test (py312, postgresql-file-upgrade-from-4.5)	2m 34s
test (py312, mysql-file)	2m 59s
test (py312, mysql-file-sqlalchemy14)	2m 54s
test (py312, mysql-swift)	3m 28s
test (py312, mysql-s3)	4m 4s
test (py312, postgresql-file)	2m 45s
test (py312, postgresql-file-sqlalchemy14)	2m 41s
test (py312, postgresql-swift)	3m 9s
test (py312, postgresql-s3)	3m 33s
	1h 32m 19s

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