[CI] use MacOS 11 instead of 10 #56

	name: CI
	on:
	pull_request:
	push:
	branches:
	- master

	jobs:
	Test:
	if: "!contains(github.event.head_commit.message, '[skip ci]')"
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-20.04
	- windows-2019
	- macos-11
	d:
	- "ldc-1.27.1"
	- "dmd-2.097.2"
	meson:
	- 0.59.1
	ninja:
	- 1.10.2
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: recursive

	# Cache
	- name: Cache
	uses: actions/cache@v2
	with:
	path: \|
	~/.dub
	~/AppData/Local/dub
	~/.cache/pip
	~/AppData/Local/pip/cache
	key: "containers-cache-OS:${{ matrix.os }}-D:${{ matrix.d }}-${{ matrix.meson }}-${{ matrix.ninja }}-deps:${{ hashFiles('./meson.build') }}-${{ hashFiles('./dub.sdl') }}"

	# Setup compilers and tools

	- name: Setup D
	uses: dlang-community/setup-dlang@v1
	with:
	compiler: ${{ matrix.d }}

	- uses: actions/setup-python@v2
	with:
	python-version: '3.x'

	- name: Setup Meson
	run: pip install meson==${{ matrix.meson }}

	- name: Setup Ninja
	uses: aminya/install-cmake@new-versions-and-arch
	with:
	cmake: false
	ninja: ${{ matrix.ninja }}

	# Build and Test

	- name: Build documentation
	run: \|
	dub build --build=ddox
	dub build --build=docs

	- name: Build
	run: \|
	meson setup ./build
	meson compile -C ./build

	- name: Install gcc-multilib
	if: contains(matrix.os, 'ubuntu')
	run: sudo apt-get install -y gcc-multilib

	- name: Make Test
	run: \|
	make -B -C test/

	# TODO it fails to run the UnrolledList test on ldc
	- name: Dub Test
	run: \|
	dub test

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