Update SECURITY.md to use the warning tag in the markdown

Author: jelveh

SECURITY.md

@@ -14,7 +14,8 @@ If you believe you've found a security issue in software that is maintained in t
 
 To submit a vulnerability report, please contact us at [email protected]. Your submission will be reviewed and validated by a member of our team.
 
-**⚠ Please do not report security vulnerabilities through public GitHub issues, discussions, or pull requests. ⚠**
+> [!WARNING]  
+> Please do not report security vulnerabilities through public GitHub issues, discussions, or pull requests.
 
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