chore(dev-deps): bump @salesforce/cli-plugins-testkit #1113

Job	Run time
yarn-lockfile-check / lockfile-check	7s
linux-unit-tests / determine-node-versions	1s
linux-unit-tests / prevent-typescript-dependency / prevent-typescript-dependency	17s
linux-unit-tests / linux-unit-tests (current)	1m 9s
linux-unit-tests / linux-unit-tests (lts/*)	1m 7s
linux-unit-tests / linux-unit-tests (lts/-1)	1m 9s
windows-unit-tests / determine-node-versions	2s
nuts (windows-latest) / yarn test:nuts	11m 21s
nuts (ubuntu-latest) / yarn test:nuts	3m 25s
windows-unit-tests / windows-unit-tests (current)	2m 58s
windows-unit-tests / windows-unit-tests (lts/*)	2m 59s
windows-unit-tests / windows-unit-tests (lts/-1)	4m 34s
	29m 9s

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