update usergroups

Author: cahillsf

communication/slack-config/usergroups.yaml

@@ -247,20 +247,23 @@ usergroups:
     description: Members of the Cluster API Release Team
     members:
       - adilGhaffarDev
+      - adityabhatia
+      - akshay196
       - cahillsf
-      - chiukapoor
-      - furkatgofurov7
-      - g-gaston
-      - hackeramitkumar
-      - kranurag7
-      - mjlshen
+      - chandankumar4
+      - Dhairya-Arora01
+      - Fedosin
+      - mcbenjemaa
       - nawazkh
-      - nprokopic
-      - prajyot-parab
-      - razashahid107
+      - ssuriyan7
+      - SubhasmitaSw
       - Sunnatillo
+      - troy0820 
+      - typeid
+      - VibhorChinda
       - vincepri
       - willie-yao
+      - yrs147 
 
   - name: kcp-devs
     long_name: kcp Development Team