ci(mergify): upgrade configuration to current format #771

Job	Run time
github-action / CI / lint	6s
github-action / CI / context	6s
github-action / Readme	0s
github-action / CI / test (test-multiline.yml)	1m 3s
github-action / CI / test (test-negative.yml)	53s
github-action / CI / test (test-query-2.yml)	50s
github-action / CI / test (test-wrong-yaml-config.yml)	1m 0s
github-action / CI / test (test-query-3.yml)	1m 1s
github-action / CI / test (test-positive.yml)	48s
github-action / CI / test (test-query-1.yml)	1m 1s
github-action / CI / test (test-structure.yml)	1m 0s
github-action / ci	4s
github-action / Release	0s
	7m 52s

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