chore(dev-deps): bump @salesforce/cli-plugins-testkit #1119

Job	Run time
yarn-lockfile-check / lockfile-check	13s
linux-unit-tests / determine-node-versions	2s
linux-unit-tests / prevent-typescript-dependency / prevent-typescript-dependency	31s
linux-unit-tests / linux-unit-tests (current)	1m 3s
linux-unit-tests / linux-unit-tests (lts/*)	1m 8s
linux-unit-tests / linux-unit-tests (lts/-1)	1m 4s
windows-unit-tests / determine-node-versions	4s
nuts (ubuntu-latest) / yarn test:nuts	1m 41s
nuts (macos-latest) / yarn test:nuts	3m 3s
nuts (windows-latest) / yarn test:nuts	9m 10s
windows-unit-tests / windows-unit-tests (current)	3m 21s
windows-unit-tests / windows-unit-tests (lts/*)	4m 13s
windows-unit-tests / windows-unit-tests (lts/-1)	4m 55s
	30m 28s

Provide feedback