Merge branch '467-adjust-securitytxt' into 'develop'

[TASK] Adjust security.txt

Closes #467

See merge request t3o/typo3.org!348

.gitignore

@@ -8,6 +8,7 @@
 /public
 !/public/security.txt
 /public/services/api-keys.php
+!/public/.well-known/security.txt
 !/public/humans.txt
 !/public/robots.txt
 !/public/services

public/.well-known/security.txt

+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA256
+
+# Please report vulnerabilities using the TYPO3 security team address
+Contact: mailto:security@typo3.org
+
+# OpenPGP key
+Encryption: https://typo3.org/fileadmin/t3o_common_storage/keys/B41CC3EF373E0F5C70187FE93BEFBD27C05FBE60.asc
+Encryption: https://keys.openpgp.org/vks/v1/by-fingerprint/B41CC3EF373E0F5C70187FE93BEFBD27C05FBE60
+Encryption: openpgp4fpr:B41CC3EF373E0F5C70187FE93BEFBD27C05FBE60
+
+# Preferred language when contacting us
+Preferred-Languages: en
+
+# Canonical URL
+Canonical: https://typo3.org/.well-known/security.txt
+
+# Security and incident handling policy
+Policy: https://typo3.org/community/teams/security/incident-handling
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