Bump semver from 5.7.1 to 5.7.2 #162

Job	Run time
Lint	18s
Tests (ubuntu-latest, chrome)	46s
Floating Dependencies (ubuntu-latest, chrome)	1m 5s
Tests - ember-lts-2.12	1m 39s
Tests - ember-lts-2.18	1m 33s
Tests - ember-lts-3.16	2m 21s
Tests - ember-lts-3.20	2m 13s
Tests - ember-lts-3.24	1m 35s
Tests - ember-lts-3.28	1m 31s
Tests - ember-lts-4.4	1m 36s
Tests - ember-lts-4.8	1m 28s
Tests - ember-3.28-with-jquery	1m 41s
Tests - ember-3.28-classic	1m 42s
Tests - ember-canary	1m 31s
	20m 59s

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