tests

fix: make `SfProject` optional #972

Job	Run time
yarn-lockfile-check / lockfile-check	8s
linux-unit-tests / determine-node-versions	2s
linux-unit-tests / prevent-typescript-dependency / prevent-typescript-dependency	13s
linux-unit-tests / linux-unit-tests (current)	1m 17s
linux-unit-tests / linux-unit-tests (lts/*)	1m 16s
linux-unit-tests / linux-unit-tests (lts/-1)	1m 14s
windows-unit-tests / determine-node-versions	3s
nuts (windows-latest) / yarn test:nuts	9m 39s
nuts (ubuntu-latest) / yarn test:nuts	5m 40s
xNuts (windows-latest) / yarn test:nuts:package	4m 33s
xNuts (ubuntu-latest) / yarn test:nuts:package	1m 14s
windows-unit-tests / windows-unit-tests (current)	2m 24s
windows-unit-tests / windows-unit-tests (lts/*)	4m 38s
windows-unit-tests / windows-unit-tests (lts/-1)	4m 46s
	37m 7s

Provide feedback