bump version to v0.5.0

Author: rcholic

predicate_authority/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "predicate-authority"
-version = "0.4.9"
+version = "0.5.0"
 description = "Deterministic pre-execution authority layer for AI agents."
 readme = "README.md"
 requires-python = ">=3.11"