chore: update SECURITY-INSIGHTS with contribution policy details 📜 (#… #8386

Job	Run time
compatibility_e2e_tests (scheduler)	30m 53s
compatibility_e2e_tests (manager)	31m 37s
compatibility_e2e_tests (client)	30m 10s
compatibility_e2e_tests (seed-client)	31m 32s
	2h 4m 12s

Provide feedback