Fix Rubocop deprecated method warnings #161

	name: Checks

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]
	workflow_dispatch:
	schedule:
	- cron: '0 6 * * 1' # 6am every Monday

	jobs:
	unit_tests:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	ruby: ['2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2']
	rubocop: ['0.63.1', '0.81.0', '0.84.0', '0.85.0', '0.86.0', '0.87.0', '< 1.0', '1.0.0', '1.29.1', '1.30.0', '1.38.0', '< 2.0']
	include:
	- ruby: '2.3'
	rubocop: '0.63.1'
	- ruby: '2.3'
	rubocop: '0.81.0'
	exclude:
	- ruby: '2.4'
	rubocop: '1.29.1'
	- ruby: '2.4'
	rubocop: '1.30.0'
	- ruby: '2.4'
	rubocop: '1.38.0'
	- ruby: '2.5'
	rubocop: '1.29.1'
	- ruby: '2.5'
	rubocop: '1.30.0'
	- ruby: '2.5'
	rubocop: '1.38.0'
	fail-fast: false
	steps:
	- uses: actions/checkout@v3
	- name: use specific rubocop version
	run: echo "gem 'rubocop', '${{ matrix.rubocop }}'" > Gemfile.local
	- name: use specific rubocop-ast version (if required)
	if: matrix.rubocop == '0.84.0' \|\| matrix.rubocop == '0.85.0'
	run: echo "gem 'rubocop-ast', '< 0.7.0'" >> Gemfile.local
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true
	- name: rake spec
	run: bundle exec rake spec

Provide feedback