chore: updating CHANGELOG for v1.1.5

Author: pyansys-ci-bot

doc/changelog.d/537.fixed.md

@@ -9,6 +9,14 @@ This document contains the release notes for the project.
 
 .. towncrier release notes start
 
+`1.1.5 <https://github.com/ansys/ansys-sphinx-theme/releases/tag/v1.1.5>`_ - 2024-10-15
+=======================================================================================
+
+Fixed
+^^^^^
+
+- use ansys-sphinx-theme variables in CSS files `#537 <https://github.com/ansys/ansys-sphinx-theme/pull/537>`_
+
 `1.1.4 <https://github.com/ansys/ansys-sphinx-theme/releases/tag/v1.1.4>`_ - 2024-10-14
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