github: add rebase workflow (#3132)
github: add rebase workflow (#3132)

* github: add rebase workflow

Signed-off-by: hi-rustin <c7d168847ad25898cad3ce2d480246882ded574b@gmail.com>

* github: add new line

Signed-off-by: hi-rustin <c7d168847ad25898cad3ce2d480246882ded574b@gmail.com>
pingcap/pd,pingcap/pd