feat: use email as main tracking field #5564

Job	Run time
filter-changes	7s
check-labels-and-engine-changes	20s
build-cli	1m 2s
build-router	0s
cli-release-url	-1s
build_test	9s
get_pr_url	0s
comment-on-success	0s
comment-on-failure	-1s
	1m 36s

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