release: Bump Security String to 2026-03-01

release/flag_values/bp2a/RELEASE_PLATFORM_SECURITY_PATCH.textproto

+1 −1

Original line number	Diff line number	Diff line
		name: "RELEASE_PLATFORM_SECURITY_PATCH"
		value {
		string_value: "2026-02-01"
		string_value: "2026-03-01"
		}