Update to ethers v6 #615

	name: run-tests
	on:
	pull_request:
	paths:
	- '.github/workflows/run_tests.yml'
	- 'hardhat.config.ts'
	- 'contracts/**'
	- 'test/**'
	jobs:
	test:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 1
	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version: 20.5.0
	- name: Installing dependencies
	run: yarn install --frozen-lockfile
	- name: Running tests
	run: yarn test

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