Bump release-it and plugins #773

# to view logs

Job	Run time
Docs	58s
Floating Dependencies	54s
Tests - Basic App	2m 31s
Tests	51s
Tests - App That Excludes Mirage	55s
ember-lts-3.28	47s
ember-lts-4.4	45s
ember-lts-4.8	59s
ember-lts-4.12	51s
ember-lts-5.4	1m 5s
ember-release	1m 3s
ember-beta	48s
ember-canary	52s
	13m 19s

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