chore(dev-deps): bump @salesforce/cli-plugins-testkit #1034

Job	Run time
yarn-lockfile-check / lockfile-check	17s
linux-unit-tests / determine-node-versions	1s
linux-unit-tests / prevent-typescript-dependency / prevent-typescript-dependency	13s
linux-unit-tests / linux-unit-tests (current)	1m 4s
linux-unit-tests / linux-unit-tests (lts/*)	1m 2s
linux-unit-tests / linux-unit-tests (lts/-1)	2m 17s
windows-unit-tests / determine-node-versions	7s
nuts (windows-latest) / yarn test:nuts	11m 18s
nuts (ubuntu-latest) / yarn test:nuts	11m 7s
xNuts (ubuntu-latest) / yarn test:nuts:package	12m 13s
xNuts (windows-latest) / yarn test:nuts:package	19m 19s
windows-unit-tests / windows-unit-tests (current)	7m 8s
windows-unit-tests / windows-unit-tests (lts/*)	2m 16s
windows-unit-tests / windows-unit-tests (lts/-1)	4m 16s
	1h 12m 38s

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