fix duplicate version in argparse #3

	name: build Qt multi-platform

	on: push # when to trigger this. Here, on every push
	jobs:
	build_and_test:
	name: "Build and test"
	strategy:
	matrix:
	os: [ubuntu-latest, windows-latest] # we build on GitHub-provided Windows and Linux images
	runs-on: ${{ matrix.os }} # use value from the matrix
	steps:
	- name: Install dependencies (linux)
	run: sudo apt install ninja-build
	if: matrix.os == 'ubuntu-latest' # conditional, runs this step only on the Ubuntu runner
	- name: Install Ninja (windows) # Ninja is not available in GitHub-provided images,
	# see https://github.com/actions/runner-images/issues/514
	run: choco install ninja # So let's install it through Chocolatey
	if: matrix.os == 'windows-latest'
	- name: Install Qt
	uses: jurplel/install-qt-action@v3
	with:
	version: '6.5.3'
	- uses: ilammy/msvc-dev-cmd@v1 # This action essentially calls vcvarsall.bat for the latest VS in the runner for x64
	- uses: actions/checkout@v3 # Actually check out the sources. GH Actions can run for events that may not require
	# sources (e.g. when someone comments on an issue)

	# Here we call CMake manually, there are solutions for that in the Marketplace: https://github.com/marketplace/actions/run-cmake
	- name: Build
	# We don't need to set up the environment variable for CMake to see Qt because the install-qt-action
	# sets up the necessary variables automatically
	run: cmake -S . -B build -G "Ninja Multi-Config" && cmake --build build --config Release

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