Update version to 1.5.23 for release preparation

This update increments the version number in the project metadata
to reflect the upcoming release. No other changes were made.

Author: aarju

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "detection_rules"
-version = "1.5.22"
+version = "1.5.23"
 description = "Detection Rules is the home for rules used by Elastic Security. This repository is used for the development, maintenance, testing, validation, and release of rules for Elastic Security’s Detection Engine."
 readme = "README.md"
 requires-python = ">=3.12"