Update SECURITY.md to reflect bug bounty program (#169) #144

Job	Run time
release-please	29s
release-server-sdk	-1s
release-sdk-internal	-1s
release-sdk-common	-1s
release-test-helpers	-1s
release-server-sdk-otel	-1s
release-server-sdk-redis-store	-1s
	23s

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