Build

Enable flatpak build in pull requests and update flatpak generator #1570

Job	Run time
test / test	1m 34s
version	14s
release-notes	4s
pypi	51s
pyinstaller (macos-12) / pyinstaller	2m 37s
pyinstaller (windows-latest) / pyinstaller	3m 21s
pyinstaller (macos-14) / pyinstaller	1m 15s
package-prep	14s
package-metadata	3s
flatpak	50s
package-windows-msix	42s
package-windows	1m 11s
package-macos (macos-12)	29s
package-macos (macos-14)	30s
deploy-msstore	0s
pr-comment	2s
deploy-github	0s
	13m 57s

Provide feedback