Gitea 1.27.0 patches major security flaws and enhances Actions

Gitea 1.27.0 fixes over 40 security vulnerabilities, including privilege escalation, SSRF, and API scope bypasses.

New Actions features such as job summaries and error handling require upgrading to Gitea Runner 2.0.0.

The release also brings performance and usability improvements, with additional security hardening for credentials and package permissions.