www/rt50: Fix vulnerabilities
The following issues are addressed with these security updates:
- RT is vulnerable to unvalidated email headers in incoming email and the mail-gateway REST interface. This vulnerability is assigned CVE-2023-41259.
- RT is vulnerable to information leakage via response messages returned from requests sent via the mail-gateway REST interface. This vulnerability is assigned CVE-2023-41260.
- RT 5.0 is vulnerable to information leakage via transaction searches made by authenticated users in the transaction query builder. This vulnerability is assigned CVE-2023-45024.
- RT 5.0 can reveal information about data on various RT objects in errors and other response messages to REST 2 requests.