Unable to build on Debian trixie

[devinrsmith]

GCC is failing with incompatible pointer types. It may be possible to simply ignore these errors by setting -Wincompatible-pointer-types, but it's probably better to try and use the more correct types if possible.

1.956 src/main/c/jni/org_jpy_PyLib.c:2529:17: error: assignment to ‘PyFrameObject *’ {aka ‘struct _frame *’} from incompatible pointer type ‘PyObject *’ {aka ‘struct _object *’} [-Wincompatible-pointer-types]
1.956  2529 |         pyFrame = PyObject_GetAttrString(pyTraceback, "tb_frame");
1.956       |                 ^

1.956 src/main/c/jni/org_jpy_PyLib.c:2533:73: error: passing argument 1 of ‘PyObject_GetAttrString’ from incompatible pointer type [-Wincompatible-pointer-types]
1.956  2533 |                 filenameChars = PyLib_ObjToChars(PyObject_GetAttrString(pyCode, "co_filename"), &pyFilenameUtf8);
1.956       |                                                                         ^~~~~~
1.956       |                                                                         |
1.956       |                                                                         PyCodeObject *

1.957 src/main/c/jni/org_jpy_PyLib.c: In function ‘python_traceback_report’:
1.958 src/main/c/jni/org_jpy_PyLib.c:2833:36: error: passing argument 1 of ‘format_python_traceback’ from incompatible pointer type [-Wincompatible-pointer-types]
1.958  2833 |     return format_python_traceback(tb, buf, bufLen);
1.958       |                                    ^~
1.958       |                                    |
1.958       |                                    PyObject * {aka struct _object *}