chore: fix generateTestMatrix.js path #3088

Job	Run time
test	1m 14s
setup-matrix	4s
lint	1m 17s
build	1m 35s
e2e (1, cypress/e2e/context-selection/categories.feature)	3m 9s
e2e (2, cypress/e2e/context-selection/data-set.feature)	5m 2s
e2e (3, cypress/e2e/context-selection/org-unit.feature)	3m 46s
e2e (4, cypress/e2e/context-selection/period.feature)	2m 34s
e2e (5, cypress/e2e/context-selection/section-filter.feature)	2m 43s
e2e (6, cypress/e2e/smoke-test.feature)	1m 31s
release	1m 17s
	24m 12s

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