Prevent crash in OpticalTactilePlugin by checking contact data validi… #64

Job	Run time
test / matrix-prep-bazelversion	5s
test / matrix-prep-os	3s
test / test (ubuntu-latest, 8.0.0, ., true)	51m 23s
test / test (ubuntu-latest, 7.3.1, ., true)	50m 23s
	1h 41m 54s

Provide feedback