feat(python): only use custom Py_buffer if limited api is below 3.11

Author: K0lb3

python/_brotli.c

@@ -16,10 +16,11 @@
 #define PyList_GET_ITEM PyList_GetItem
 #define PyList_SET_ITEM PyList_SetItem
 #define PyBytes_AS_STRING PyBytes_AsString
-// Py_buffer is only available in stable api 3.10+
 // as we want to support 3.6+ we need to define a dummy struct
 // to not break compatibility with Python 2
 // len is of type int, as Py_ssize_t clean is 3.7+
+#ifdef Py_LIMITED_API && PY_VERSION_HEX < 0x030B0000
+// Py_buffer is only available in stable api 3.11+
 typedef struct {
     void *buf;
     int len;
@@ -29,6 +30,7 @@ static void PyBuffer_Release(Py_buffer *view) {
     view->len = -1;
 }
 #endif
+#endif
 #else
 #define Py_ARRAY_LENGTH(array)  (sizeof(array) / sizeof((array)[0]))
 #endif
@@ -460,7 +462,7 @@ static PyObject* brotli_Compressor_process(brotli_Compressor *self, PyObject *ar
   int ok;
 
 #if PY_MAJOR_VERSION >= 3
-#ifdef Py_LIMITED_API
+#ifdef Py_LIMITED_API && PY_VERSION_HEX < 0x030B0000
   ok = PyArg_ParseTuple(args, "y#:process", &input.buf, &input.len);
 #else
   ok = PyArg_ParseTuple(args, "y*:process", &input);
@@ -780,7 +782,7 @@ static PyObject* brotli_Decompressor_process(brotli_Decompressor *self, PyObject
   int ok;
 
 #if PY_MAJOR_VERSION >= 3
-#ifdef Py_LIMITED_API
+#ifdef Py_LIMITED_API && PY_VERSION_HEX < 0x030B0000
   ok = PyArg_ParseTuple(args, "y#:process", &input.buf, &input.len);
 #else
   ok = PyArg_ParseTuple(args, "y*:process", &input);
@@ -947,7 +949,7 @@ static PyObject* brotli_decompress(PyObject *self, PyObject *args, PyObject *key
   int ok;
 
 #if PY_MAJOR_VERSION >= 3
-#ifdef Py_LIMITED_API
+#ifdef Py_LIMITED_API && PY_VERSION_HEX < 0x030B0000
   ok = PyArg_ParseTupleAndKeywords(args, keywds, "y#|:decompress",
                                    (char**) kwlist, &input.buf, &input.len);
 #else