Replace `std::result_of_t` with `std::invoke_result_t` to fix C++20 b… #27

	name: Doxygen update

	on:
	push:
	branches:
	- main
	paths:
	- include/*/.h
	- tools/doxywrap
	- data/Doxyfile.in
	- data/doxygen_footer.html
	- data/doxygen.h
	- data/doxygen_layout.xml
	- data/gul17.png
	- data/gul17_big.png
	- data/style.css
	workflow_dispatch:

	jobs:
	doxyrun:
	name: Create Docu
	runs-on: ubuntu-latest
	permissions:
	contents: write
	steps:
	- name: Fetch Repository
	uses: actions/checkout@v4

	- name: Fetch Ninja
	run: \|
	sudo apt install ninja-build doxygen graphviz

	- name: Fetch modern Meson
	uses: robinraju/release-downloader@v1.11
	with:
	repository: "mesonbuild/meson"
	tag: "0.62.0"
	fileName: "*.tar.gz"
	- name: Unpack Meson
	run: \|
	tar zxf meson*.tar.gz
	ln -vs meson*/meson.py meson
	which python \|\| which python3
	echo "PATH=${PATH}:$(pwd)" >> $GITHUB_ENV
	- name: Try Meson and Ninja
	run: \|
	meson --version
	ninja --version

	- name: Call Doxygen
	run: \|
	meson setup build
	ninja -C build data/docs

	- name: Publish Docu
	uses: JamesIves/github-pages-deploy-action@v4
	with:
	folder: "build/data/doxygenerated/html"
	target-folder: "docs"
	clean: true
	commit-message: "[ci] Regenerate Doxygen docs"
	git-config-name: GitHub Actions

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