chore(deps-dev): bump sinon and @types/sinon #635

Job	Run time
Tests	1m 6s
Floating Dependencies	1m 28s
Type checking - [email protected]	51s
ember-lts-3.28	56s
Type checking - [email protected]	1m 13s
ember-lts-4.4	48s
Type checking - typescript@next	1m 0s
ember-lts-4.8	1m 6s
ember-lts-4.12	1m 0s
ember-release	1m 0s
ember-beta	53s
ember-canary	1m 37s
ember-classic	1m 15s
embroider-safe	1m 33s
embroider-optimized	56s
	16m 42s

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