`__bytes__` fails on Python 3.13 when backing memory is `bytearray`

[renato-osec]

MemoryResolver.resolve() returns bytearray slices, which is ultimately what array_impl.to_bytes() uses. Python 3.13 enforces that __bytes__ must return bytes, not bytearray, so this error turns up

  File "libdestruct/common/obj.py", line 136, in __bytes__
    return self.to_bytes()
  File "libdestruct/common/array/array_impl.py", line 63, in to_bytes
    return b"".join(bytes(x) for x in self)
TypeError: __bytes__ returned non-bytes (type bytearray)

Minimal script derived from what I was trying to do:

from libdestruct import inflater
from libdestruct.c.struct_parser import definition_to_type

MyStruct = definition_to_type("""
    struct Foo {
        char name[8];
    };
""")

lib = inflater(bytearray(b"AAAAAAAA"))
provola = lib.inflate(MyStruct, 0)
bytes(provola)

Fix: memory_resolver.py:48:

-        return self.memory[address : address + size]
+        return bytes(self.memory[address : address + size])