Stop warning about HOME not being present on Windows runners

[EndBug]

As of now, the toolkit is creating a warning every time the HOME env variable is not present, as it's part of the required env variables:

actions-toolkit/src/index.ts

Lines 264 to 274 in c6c7208

	const requiredEnvVars = [
	'HOME',
	'GITHUB_WORKFLOW',
	'GITHUB_ACTION',
	'GITHUB_ACTOR',
	'GITHUB_REPOSITORY',
	'GITHUB_EVENT_NAME',
	'GITHUB_EVENT_PATH',
	'GITHUB_WORKSPACE',
	'GITHUB_SHA'
	]

A user of mine has reported here that Windows runners don't use the HOME variable, even if they are original runners from GitHub.

I think the HOME variable could be removed from the list, since it doesn't seem to be actually used by the toolkit. Also, if one really needed to work with paths, there are a lot of other variables that GitHub provides in their runners, like: GITHUB_WORKSPACE, GITHUB_ACTION_PATH, GITHUB_EVENT_PATH, GITHUB_PATH, ...

[cliffchapmanrbx]

I can confirm that my company has been using your GHA workflow and we have been seeing this warning for quite some time :)

It looks like the HOME env var is not used for anything other than tests. Indeed some time ago explicitly failing on missing env vars was reverted because valid GitHub envs omitted some of the list.

It seems like dropping HOME from that list would be safe to do, provided the tests were updated to alter a different expected env var.

[github-actions]

This issue has been inactive for awhile; please comment if it's still relevant!

[EndBug]

Yup

[EndBug]

But I did comment! >:|