Update: Add priority label and clarify security issue reporting guidelines

- Added "P1: high" label to security issues for better prioritization.
- Updated markdown instructions to emphasize the importance of using GitHub Security Advisory for reporting vulnerabilities.
- Clarified that this issue is solely for sharing the advisory URL and not for discussing the vulnerability details.
- Retained the step-by-step guide for submitting and sharing the GitHub Security Advisory URL.

modified: .github/ISSUE_TEMPLATE/security_issue.yml

.github/ISSUE_TEMPLATE/security_issue.yml

@@ -3,7 +3,7 @@ name: "🛡️ Security Issue"
 description: |
   Notify Louis Lam about a security concern. Please do NOT include any sensitive details in this issue.
 # title: "Security Issue"
-labels: [security]
+labels: ["security", "P1: high"]
 assignees: [louislam]
 body:
   - type: "markdown"