tests: Update for required byteorder arg for int.from_bytes()/to_bytes().

tests/basics/int_bytes_notimpl.py

+try:
+    print((10).to_bytes(1, "big"))
+except Exception as e:
+    print(type(e))
+
+try:
+    print(int.from_bytes(b"\0", "big"))
+except Exception as e:
+    print(type(e))

tests/basics/int_bytes_notimpl.py.exp

+<class 'NotImplementedError'>
+<class 'NotImplementedError'>

tests/extmod/uctypes_ptr_le.py

@@ -14,7 +14,7 @@ desc = {
 bytes = b"01"
 
 addr = uctypes.addressof(bytes)
-buf = addr.to_bytes(uctypes.sizeof(desc))
+buf = addr.to_bytes(uctypes.sizeof(desc), "little")
 
 S = uctypes.struct(uctypes.addressof(buf), desc, uctypes.LITTLE_ENDIAN)
 

tests/extmod/uctypes_ptr_native_le.py

@@ -15,7 +15,7 @@ desc = {
 bytes = b"01"
 
 addr = uctypes.addressof(bytes)
-buf = addr.to_bytes(uctypes.sizeof(desc))
+buf = addr.to_bytes(uctypes.sizeof(desc), "little")
 
 S = uctypes.struct(uctypes.addressof(buf), desc, uctypes.NATIVE)