refactor: inherit from Html2rss::Error instead of StandardError #321

	name: Ruby

	"on":
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	lint:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-node@v2
	with:
	node-version: "20"

	- name: Install dependencies
	run: \|
	sudo apt-get install -yqq yamllint

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3.3
	bundler-cache: true

	- name: Run linters
	run: make lint

	test:
	strategy:
	fail-fast: false
	matrix:
	ruby: ["3.3"]

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true

	- name: Run tests
	run: make test

	test_changed_configs:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3.3
	bundler-cache: true

	- name: setup remote origin
	run: >-
	git remote set-url origin
	https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}

	- name: Test changed configs with fetching
	run: \|
	git fetch origin master --depth 1
	make test-fetch-changed-configs

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