doesnt build with python 3.13

[emdete]

the module doesnt build under python 3.13:

ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (asyncpg)

it seems its uses elemts of the Py-API that are private now, for example:

      x86_64-linux-gnu-gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O2 -Wall -fPIC -I/home/mautrix-telegram/env/include -I/usr/include/python3.13 -c as
yncpg/pgproto/pgproto.c -o build/temp.linux-x86_64-cpython-313/asyncpg/pgproto/pgproto.o -O2 -fsigned-char -Wall -Wsign-compare -Wconversion
      asyncpg/pgproto/pgproto.c:864:1: warning: ‘Py_UNICODE’ is deprecated [-Wdeprecated-declarations]
        864 | static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u) {
            | ^~~~~~
      asyncpg/pgproto/pgproto.c: In function ‘__Pyx_Py_UNICODE_strlen’:
      asyncpg/pgproto/pgproto.c:865:5: warning: ‘Py_UNICODE’ is deprecated [-Wdeprecated-declarations]
        865 |     const Py_UNICODE *u_end = u;
            |     ^~~~~
      asyncpg/pgproto/pgproto.c: In function ‘__Pyx_init_assertions_enabled’:
      asyncpg/pgproto/pgproto.c:1667:39: error: implicit declaration of function ‘_PyInterpreterState_GetConfig’; did you mean ‘PyInterpreterState_GetID’? [-Wimplicit-function-declaration]
       1667 |     __pyx_assertions_enabled_flag = ! _PyInterpreterState_GetConfig(__Pyx_PyThreadState_Current->interp)->optimization_level;
            |                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            |                                       PyInterpreterState_GetID
      asyncpg/pgproto/pgproto.c:1667:105: error: invalid type argument of ‘->’ (have ‘int’)
       1667 |     __pyx_assertions_enabled_flag = ! _PyInterpreterState_GetConfig(__Pyx_PyThreadState_Current->interp)->optimization_level;
            |                                                                                                         ^~
      asyncpg/pgproto/pgproto.c: In function ‘__Pyx_PyUnicode_Join’:
      asyncpg/pgproto/pgproto.c:38932:13: error: implicit declaration of function ‘_PyUnicode_FastCopyCharacters’; did you mean ‘PyUnicode_CopyCharacters’? [-Wimplicit-function-declaration]