Migrate GHA workflows to use Fontist

[ronaldtse]

To replace these lines:

mn2pdf/.github/workflows/release.yml

Lines 25 to 27 in 9317c5a

	# If necessary
	echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | sudo debconf-set-selections
	sudo apt-get install ttf-mscorefonts-installer

mn2pdf/.github/workflows/macos.yml

Lines 29 to 34 in 9317c5a

	# - name: Install Microsoft Vista fonts
	# run: |
	# export MN_PDF_FONT_PATH=${GITHUB_WORKSPACE}/fonts
	# export MS_FONT_PATH=${MN_PDF_FONT_PATH}/truetype/vista
	# export RENAME_FONTS=false
	# curl -Ls https://raw.githubusercontent.com/metanorma/vista-fonts-installer/master/vista-fonts-installer.sh | bash

mn2pdf/.github/workflows/ubuntu.yml

Lines 26 to 32 in 9317c5a

	# If necessary
	echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | sudo debconf-set-selections
	sudo apt-get install ttf-mscorefonts-installer
	# - name: Setup Cambria fonts
	# run: |
	# curl -Ls https://raw.githubusercontent.com/metanorma/vista-fonts-installer/master/vista-fonts-installer.sh | sudo bash

[CAMOBAP]

Done