Update project version to 1.5.4.5

Bump version from 1.5.4.3 to 1.5.4.5 in pyproject.toml

Author: beacoder

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "python-agent-harness"
-version = "1.5.4.3"
+version = "1.5.4.5"
 description = "A lightweight, hackable mini-OpenCode written in Python."
 readme = "README.md"
 requires-python = ">=3.11"