Support Python3.13

[fullerzz]

Changes

• Project now supports Python3.13
• Replaced msgspec with pydantic
• Replaced test server with quart - was previously blacksheep
• Upgraded dependencies

[fullerzz]

Looks like blacksheep is having install issues with python3.13. It's just being used for the test server, so can probably just migrate to Flask or FastAPI.

[fullerzz]

msgspec is also failing to build/install with python3.13. jcrist/msgspec#764

error: Failed to prepare distributions
  Caused by: Failed to download and build `msgspec==0.18.6`
  Caused by: Build backend failed to build wheel through `build_wheel` (exit status: 1)

[stdout]
running bdist_wheel
running build
running build_py
copying msgspec/toml.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/yaml.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/structs.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/inspect.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/json.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/_utils.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/_json_schema.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/__init__.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/msgpack.py -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/__init__.pyi -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/json.pyi -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/msgpack.pyi -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/structs.pyi -> build/lib.linux-x86_64-cpython-313/msgspec
copying msgspec/py.typed -> build/lib.linux-x86_64-cpython-313/msgspec
UPDATING build/lib.linux-x86_64-cpython-313/msgspec/_version.py
set build/lib.linux-x86_64-cpython-313/msgspec/_version.py to '0.18.6'
running build_ext
building 'msgspec._core' extension
gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -I/home/zach/.cache/uv/builds-v0/.tmp3RAeGo/include -I/home/zach/.pyenv/versions/3.13.0/include/python3.13 -c msgspec/_core.c -o build/temp.linux-x86_64-cpython-313/msgspec/_core.o

[stderr]
msgspec/_core.c: In function ‘find_keyword’:
msgspec/_core.c:500:13: warning: implicit declaration of function ‘_PyUnicode_EQ’; did you mean ‘PyUnicode_New’? [-Wimplicit-function-declaration]
  500 |         if (_PyUnicode_EQ(kwname, key)) {
      |             ^~~~~~~~~~~~~
      |             PyUnicode_New
msgspec/_core.c: In function ‘typenode_collect_convert_structs’:
msgspec/_core.c:4452:12: warning: implicit declaration of function ‘_PySet_NextEntry’ [-Wimplicit-function-declaration]
 4452 |     while (_PySet_NextEntry(state->structs_set, &set_pos, &set_item, &set_hash)) {
      |            ^~~~~~~~~~~~~~~~
msgspec/_core.c: In function ‘ms_uuid_to_16_bytes’:
msgspec/_core.c:11254:15: error: too few arguments to function ‘_PyLong_AsByteArray’
11254 |     int out = _PyLong_AsByteArray((PyLongObject *)int128, buf, 16, 0, 0);
      |               ^~~~~~~~~~~~~~~~~~~
In file included from /home/zach/.pyenv/versions/3.13.0/include/python3.13/longobject.h:107,
                 from /home/zach/.pyenv/versions/3.13.0/include/python3.13/Python.h:81,
                 from msgspec/_core.c:9:
/home/zach/.pyenv/versions/3.13.0/include/python3.13/cpython/longobject.h:111:17: note: declared here
  111 | PyAPI_FUNC(int) _PyLong_AsByteArray(PyLongObject* v,
      |                 ^~~~~~~~~~~~~~~~~~~
error: command '/usr/bin/gcc' failed with exit code 1