Update SECURITY_CONTACTS

Update the SECURITY_CONTACTS to point to the SRC

SECURITY_CONTACTS

@@ -1,17 +1,15 @@
 # Defined below are the security contacts for this repo.
 #
-# They are the contact point for the Product Security Committee to reach out
+# They are the contact point for the Security Response Committee (SRC) to reach out
 # to for triaging and handling of incoming issues.
 #
 # The below names agree to abide by the
 # [Embargo Policy](https://git.k8s.io/security/private-distributors-list.md#embargo-policy)
 # and will be removed and replaced if they violate that agreement.
 #
+# To contact the SRC, please see https://github.com/kubernetes/committee-security-response#contacting-the-src
+#
 # DO NOT REPORT SECURITY VULNERABILITIES DIRECTLY TO THESE NAMES, FOLLOW THE
 # INSTRUCTIONS AT https://kubernetes.io/security/
 
-cjcullen
-joelsmith
-liggitt
-philips
-tallclair
+committee-security-response