Address Rails 7.1 deprecation warning in elasticsearch-rails #2

	name: Ruby 2.7
	on:
	push:
	branches:
	- 6.x
	pull_request:
	branches:
	- 6.x
	jobs:
	tests:
	env:
	TEST_ES_SERVER: http://localhost:9200
	RAILS_VERSIONS: '5.0,6.0'
	strategy:
	fail-fast: false
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Increase system limits
	run: \|
	sudo swapoff -a
	sudo sysctl -w vm.swappiness=1
	sudo sysctl -w fs.file-max=262144
	sudo sysctl -w vm.max_map_count=262144
	- uses: elastic/elastic-github-actions/elasticsearch@master
	with:
	stack-version: 6.8.12
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: 2.7
	- name: Bundle
	run: \|
	sudo apt-get install libsqlite3-dev
	gem install bundler
	bundle install
	bundle exec rake bundle:clean
	bundle exec rake bundle:install
	- name: Test
	run: bundle exec rake test:all

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