promote SungJin1212 to maintainer (#6852)

Signed-off-by: yeya24 <benye@amazon.com>

Author: yeya24

MAINTAINERS.md

@@ -7,12 +7,12 @@
 | Charlie Le         | chtle4@gmail.com      | @CharlieTLe   | Apple               |
 | Daniel Blando      | daniel@blando.com.br  | @danielblando | Amazon Web Services |
 | Friedrich Gonzalez | friedrichg@gmail.com  | @friedrichg   | Apple               |
+| Sungjin Lee        | tjdwls1201@gmail.com  | @SungJin1212  | KakaoEnterprise     |
 
 ### Triagers
 
 
 | Name            | Email                      | GitHub          | Company             |
 |-----------------|----------------------------|-----------------|---------------------|
 | Anand Rajagopal | anand.rajagopal@icloud.com | @rajagopalanand | Amazon Web Services |
-| Sungjin Lee     | tjdwls1201@gmail.com       | @SungJin1212    | KakaoEnterprise     |
 | Daniel Sabsay   | danielsabsay.sofware@gmail.com          | @dsabsay        | Adobe               |