GHSA-8g98-m4j9-qww5: Taylored webhook validation vulnerabilities

A series of moderate to high-severity security vulnerabilities have been identified specifically in version 7.0.7 of `taylored`. These vulnerabilities reside in the “Backend-in-a-Box” template distributed with this version. They could allow a malicious actor to read arbitrary files from the server, download paid patches without completing a valid purchase, and weaken the protection of encrypted patches.

All users who have installed or generated a `taysell-server` using version 7.0.7 of `taylored` are strongly advised to immediately upgrade to version 7.0.8 (or later) and follow the required mitigation steps outlined below. Versions prior to 7.0.7 did not include the Taysell functionality and are therefore not affected by these specific issues.