Add pydantic[email] extra to dependencies

Enable pydantic's email validators by requiring the email extra in pyproject.toml (pydantic[email]>=2.10.0,<3.0.0) and regenerate the lockfile so the pydantic entry includes the email extra.

Author: JR-1991

pyproject.toml

@@ -11,7 +11,7 @@ authors = [
 ]
 dependencies = [
     "httpx>=0.28.0,<0.30.0",
-    "pydantic>=2.10.0,<3.0.0",
+    "pydantic[email]>=2.10.0,<3.0.0",
     "typing-extensions>=4.14.1,<5.0.0",
     "rich>=14.1.0,<15.0.0",
     "deprecation>=2.1.0,<3.0.0",