Bump dawidd6/action-send-mail from 3 to 4 (#195) #487

Job	Run time
Test and Deploy on latest (Debug)	25m 36s
Test on stable (Debug)	8m 54s
Indepth Tests (Debug, all libraries)	28m 23s
Test and Deploy on latest (Release)	30m 49s
Test on stable (Release)	8m 50s
Indepth Tests (Debug, no libraries)	21m 44s
Indepth Tests (Release, all libraries)	29m 41s
Indepth Tests (Release, no libraries)	22m 34s
Email notification	3s
	2h 56m 34s

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