Update pydantic and mypy. (#374)

Author: mattgd

setup.py

@@ -27,7 +27,7 @@
     ),
     zip_safe=False,
     license=about["__license__"],
-    install_requires=["httpx>=0.27.0", "pydantic==2.8.2"],
+    install_requires=["httpx>=0.27.0", "pydantic==2.9.2"],
     extras_require={
         "dev": [
             "flake8",
@@ -37,7 +37,7 @@
             "six==1.16.0",
             "black==24.4.2",
             "twine==5.1.1",
-            "mypy==1.11.0",
+            "mypy==1.12.0",
             "httpx>=0.27.0",
         ],
         ":python_version<'3.4'": ["enum34"],