README.md: add Arduino UNO R4 to list of unsupported devices #788

	# See https://docs.github.com/en/actions/guides for documentation about GitHub
	# Actions.

	name: AUnit Tests

	# Run on all branches.
	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Setup
	run: \|
	sudo apt update
	sudo apt install -y libcurl4-openssl-dev
	cd ..
	git clone --depth 1 https://github.com/HowardHinnant/date
	git clone --depth 1 https://github.com/bxparks/EpoxyDuino
	git clone --depth 1 https://github.com/bxparks/AceRoutine
	git clone --depth 1 https://github.com/bxparks/AUnit
	git clone --depth 1 https://github.com/bxparks/AceCommon
	git clone --depth 1 https://github.com/bxparks/AceWire
	git clone --depth 1 https://github.com/bxparks/AceSorting

	- name: Verify examples
	run: \|
	make -C examples
	make -C examples/MemoryBenchmark epoxy

	- name: Verify tests
	run: \|
	make -C tests
	make -C tests runtests

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