tests

chore: remove doc/E2E_TESTING_PLAN.md from .gitignore #217

Job	Run time
yarn-lockfile-check / lockfile-check	13s
linux-unit-tests / determine-node-versions	5s
linux-unit-tests / prevent-typescript-dependency / prevent-typescript-dependency	25s
linux-unit-tests / linux-unit-tests (24.14.0)	35s
linux-unit-tests / linux-unit-tests (25)	35s
linux-unit-tests / linux-unit-tests (20)	30s
linux-unit-tests / linux-unit-tests (22)	26s
windows-unit-tests / determine-node-versions	5s
nuts (ubuntu-latest) / yarn test:nuts	3m 2s
nuts (windows-latest) / yarn test:nuts	10m 55s
windows-unit-tests / windows-unit-tests (25)	2m 58s
windows-unit-tests / windows-unit-tests (24.14.0)	2m 44s
windows-unit-tests / windows-unit-tests (22)	2m 29s
windows-unit-tests / windows-unit-tests (20)	3m 32s
	28m 34s

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