fix: require pydantic>=2.12.0

Pydantic 2.11 broke two things that 2.12 fixes:
- model_validate() rejected the extra kwarg used by datamodel-code-generator 0.51.0
- model_rebuild() resolved inherited forward refs in the subclass module,
  breaking cross-module generated models (e.g. opensemantic.base)

Author: simontaurus

setup.cfg

@@ -52,7 +52,7 @@ install_requires =
     opensemantic
     opensemantic.core>=0.57.4
     opensemantic.base>=0.42.7
-    pydantic[email]>=1.10.17
+    pydantic[email]>=2.12.0
     datamodel-code-generator==0.51.0
     black
     isort