build: release v1.5.1.

Author: outofcoffee

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.5.1] - 2025-08-22
+### Changed
+- refactor: only load external plugins requested by config files.
+
 ## [1.5.0] - 2025-08-22
 ### Added
 - feat: add support for loading OIDC configuration from plugin config block.