Flatpak / Flathub release #245

Job	Run time
Test Processing	4m 7s
(linux/aarch64) Create Processing Build	9m 4s
(linux/x64) Create Processing Build	10m 56s
(macos/aarch64) Create Processing Build	4m 34s
(macos/x64) Create Processing Build	9m 38s
(windows/x64) Create Processing Build	6m 28s
	44m 47s

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