Fix executable permissions within Snap #158

Job	Run time
Run Tests	43s
Create Pre-release for linux (arm)	3m 34s
Create Pre-release for linux (x64)	1m 3s
Create Pre-release for windows (x64)	1m 34s
Create Pre-release for macos (x64)	1m 43s
Create Pre-release for macos (aarch64)	1m 1s
Create Pre-release for linux (aarch64)	1m 0s
	10m 38s

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