ci(mergify): upgrade configuration to current format #2964

Job	Run time
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / compile project with mill	3m 41s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / Formatting	1m 32s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / Integration Tests	12m 20s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / ci	21m 54s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / Benchmarking Sanity Check	2m 40s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / Build Mdoc & Website	6m 34s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / Standard Library (2.13.15)	1m 51s
ci (ubuntu-22.04, 8, 2.13.15, 2.4, 7.0) / Test Scala-CLI Example / Build and Test	3m 3s
check tests	3s
all tests passed	1s
publish	0s
Deploy Website	0s
	53m 39s

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