[RESULT][VOTE] Release Apache Celeborn 0.6.0-rc4

[Fei Wang]

Hi all,

The vote[1] passes with.
(* = binding)
+1:
Jiashu Xiong *
Ethan Feng *
Xu Huang
Nicholas Jiang *
Fei Wang *

+0: None

-1: None

[1] https://lists.apache.org/thread/9s3wv2h9v21zh62v4jb24jsg275cwo1k

Thanks,
Fei Wang