refactor: change security issue redirect to angular.dev (angular#58070)

Ensure the security issue template points to the correct location.

PR Close angular#58070

Author: JoostK

.github/ISSUE_TEMPLATE/config.yml

@@ -1,7 +1,7 @@
 blank_issues_enabled: false
 contact_links:
   - name: Security issue disclosure
-    url: https://angular.io/guide/security#report-issues
+    url: https://angular.dev/best-practices/security#report-issues
     about: Report a security issue in Angular Framework, CDK, Material, or CLI
   - name: Angular CLI
     url: https://github.com/angular/angular-cli/issues/new/choose

adev/src/content/guide/security.md

@@ -5,6 +5,8 @@ It doesn't cover application-level security, such as authentication and authoriz
 
 For more information about the attacks and mitigations described below, see the [Open Web Application Security Project (OWASP) Guide](https://www.owasp.org/index.php/Category:OWASP_Guide_Project).
 
+<a id="report-issues"></a>
+
 <docs-callout title="Reporting vulnerabilities">
 
 Angular is part of Google [Open Source Software Vulnerability Reward Program](https://bughunters.google.com/about/rules/6521337925468160/google-open-source-software-vulnerability-reward-program-rules). [For vulnerabilities in Angular, please submit your report at https://bughunters.google.com](https://bughunters.google.com/report).