Update `ember-power-select` to v8, switch to v2 addon & drop ember < 3.28 #48

	name: CI

	on:
	push:
	branches:
	- main
	- master
	pull_request: {}

	concurrency:
	group: ci-${{ github.head_ref \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	test:
	name: "Tests"
	runs-on: ubuntu-latest
	timeout-minutes: 10

	steps:
	- uses: actions/checkout@v3
	- name: Install Node
	uses: actions/setup-node@v3
	with:
	node-version: 18
	cache: npm
	- name: Install Dependencies
	run: npm ci
	- name: Lint
	run: npm run lint
	- name: Run Tests
	run: npm run test:ember

	floating:
	name: "Floating Dependencies"
	runs-on: ubuntu-latest
	timeout-minutes: 10

	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-node@v3
	with:
	node-version: 18
	cache: npm
	- name: Install Dependencies
	run: npm install --no-shrinkwrap
	- name: Run Tests
	run: npm run test:ember

	try-scenarios:
	name: ${{ matrix.try-scenario }}
	runs-on: ubuntu-latest
	needs: "test"
	timeout-minutes: 10

	strategy:
	fail-fast: false
	matrix:
	try-scenario:
	- ember-lts-3.38
	- ember-lts-4.4
	- ember-lts-4.8
	- ember-lts-4.12
	- ember-lts-5.4
	- ember-lts-5.8
	- ember-release
	- ember-beta
	- ember-canary
	- embroider-safe
	- embroider-optimized

	steps:
	- uses: actions/checkout@v3
	- name: Install Node
	uses: actions/setup-node@v3
	with:
	node-version: 18
	cache: npm
	- name: Install Dependencies
	run: npm ci
	- name: Run Tests
	run: ./node_modules/.bin/ember try:one ${{ matrix.try-scenario }}

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