Update Node version to avoid hardhat silently bail with success #4682

	name: "Validate yarn.lock and cache"

	#on: [pull_request]

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-node@v3
	with:
	node-version: "18.15.0"
	cache: "yarn"

	# The following steps are for checking the validity of the yarn.lock edits.
	# This will make sure that the file and the package cache have not been tempered with.
	- run: yarn install --immutable --immutable-cache --check-cache

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