chore: link SECURITY.md (envoyproxy#5168)

Signed-off-by: Arko Dasgupta <[email protected]>

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1 @@
 blank_issues_enabled: false
-contact_links:
-- name: "Crash bug"
-  url: https://github.com/envoyproxy/envoy/security/policy
-  about: "Please file any crash bug with [email protected]."

.github/ISSUE_TEMPLATE/non--crash-security--bug.md

@@ -9,8 +9,7 @@ assignees: ''
 
 *Description*:
 >What issue is being seen? Describe what should be happening instead of
-the bug, for example: Envoy should not crash, the expected value isn't
-returned, etc.
+the bug, for example: The expected value isn't returned, etc.
 
 *Repro steps*:
 > Include sample requests, environment, etc. All data and inputs

README.md

@@ -31,6 +31,10 @@ Kubernetes-based application gateway.
 * [Contributing guide](https://gateway.envoyproxy.io/contributions/contributing/)
 * [Developer guide](https://gateway.envoyproxy.io/contributions/develop/)
 
+## Security Reporting
+
+If youve found a security vulnerability or a process crash, please follow the instructions in [SECURITY.md](./SECURITY.md) to submit a report.
+
 ## Community Meeting
 
 The Envoy Gateway team meets every Tuesday and Thursday. We also have a separate meeting to be held in the