update percy widths #354

Job	Run time
Floating Dependencies	1m 50s
Tests	3m 2s
Percy Tests	2m 39s
ember-canary - Allowed to fail	2m 44s
ember-lts-3.28	2m 29s
ember-release-no-deprecations - Allowed to fail	2m 43s
ember-release	2m 25s
ember-beta	2m 42s
ember-classic	2m 23s
ember-default-with-jquery	2m 24s
embroider-safe	2m 35s
embroider-optimized	2m 39s
no-deprecations	2m 30s
	33m 5s

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