[TASK] Add policy to security.txt

public/security.txt

@@ -12,6 +12,8 @@ Encryption: openpgp4fpr:B41CC3EF373E0F5C70187FE93BEFBD27C05FBE60
 # Preferred language when contacting us
 Preferred-Languages: en
 
+Policy: https://typo3.org/community/teams/security/incident-handling
+
 # Canonical URL
 Canonical: https://typo3.org/security.txt
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