Bump policyengine-core to 3.23.0 (#1440)

* Bump policyengine-core to 3.23.0

Updates to policyengine-core 3.23.0 which adds strict enum validation.
Invalid enum values will now raise ValueError instead of silently
converting to index 0.

This tests that all enum values in our test files are valid.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: Format __init__.py with Black

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: MaxGhenis

changelog_entry.yaml

@@ -0,0 +1,4 @@
+- bump: patch
+  changes:
+    changed:
+      - Bump policyengine-core to 3.23.0 (adds strict enum validation).

policyengine_uk/__init__.py

@@ -1,6 +1,10 @@
 # -*- coding: utf-8 -*-
 
 import os
+from pathlib import Path
+
+from policyengine_core.taxbenefitsystems import TaxBenefitSystem
+
 from policyengine_uk import entities
 from policyengine_uk.system import (
     CountryTaxBenefitSystem,
@@ -10,9 +14,6 @@
     parameters,
     variables,
 )
-from pathlib import Path
-import os
 from .model_api import *
-from policyengine_core.taxbenefitsystems import TaxBenefitSystem
 
 REPO = Path(__file__).parent

pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
 ]
 requires-python = ">=3.13,<3.14"
 dependencies = [
-    "policyengine-core>=3.19.3",
+    "policyengine-core>=3.23.0",
     "microdf-python>=1.0.2",
     "pydantic>=2.11.7",
     "tables>=3.10.2",