Update dependency ember-page-title to v9 (#295) #1489

Job	Run time
Floating Dependencies	46s
Tests	46s
ember-lts-4.8	43s
ember-lts-4.4	56s
ember-lts-4.12	48s
ember-beta	46s
ember-release	49s
embroider-optimized	59s
ember-canary	1m 13s
ember-modifier-3.2.7	49s
embroider-safe	46s
no-deprecations	48s
ember-lts-5.12	43s
ember-lts-3.28	47s
ember-release-no-deprecations	1m 22s
	13m 1s

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