Update CODEOWNERS (#562)

new codeowners

Author: jprakash-db

.github/CODEOWNERS

@@ -2,4 +2,4 @@
 # the repo. Unless a later match takes precedence, these
 # users will be requested for review when someone opens a
 # pull request.
-*       @deeksha-db @samikshya-db @jprakash-db @yunbodeng-db @jackyhu-db @benc-db
+*       @deeksha-db @samikshya-db @jprakash-db @jackyhu-db @madhav-db @gopalldb @jayantsing-db @vikrantpuppala @shivam2680