Update release-team-leads slack group for 1.28 RT

Signed-off-by: Mark Rossetti <marosset@microsoft.com>

communication/slack-config/sig-release/usergroups.yaml

@@ -49,17 +49,17 @@ usergroups:
       - sig-release
     members:
       - cpanato # SIG Release Technical Lead
-      - Heba # 1.27 RT Lead Shadow
-      - hosseinsalahi # 1.27 RT Lead Shadow
-      - JamesLaverack # 1.27 Emeritus Advisor
+      - gracenng # 1.28 RT Lead
+      - helayoty # 1.28 RT Lead Shadow
       - jeremyrickard # SIG Release Chair
       - justaugustus # SIG Release Chair
-      - katcosgrove # 1.27 RT Lead Shadow
+      - leonardpahlke # 1.28 Emeritus Adviser
+      - marosset # 1.28 RT Lead Shadow
+      - mickeyboxell # 1.28 RT Lead Shadow
+      - neoaggelos # 1.28 RT Lead Shadow
       - puerco # SIG Release Technical Lead
-      - psaggu # 1.27 RT Lead Shadow
       - saschagrunert # SIG Release Chair
       - Verolop # SIG Release Technical Lead
-      - Xander # 1.27 RT Lead
 
   # Should match SIG Release Leads at all times:
   # https://git.k8s.io/community/sig-release/README.md#leadership

communication/slack-config/users.yaml

@@ -77,6 +77,7 @@ users:
   hardys: UFMADFMS4
   hasheddan: ULLQEF30C
   Heba: UHE5TSU4W
+  helayoty: UHE5TSU4W
   hoegaarden: U7VA4RZS9
   hosseinsalahi: U7SR0QJP8
   hubertstefanski: U01941KQ2UT
@@ -128,11 +129,13 @@ users:
   margocrawf: U01FWP2K74J
   markyjackson-taulia: U19TKJ64E
   MarlonGamez: U016N1XK06R
+  marosset: ULAUQ1KFZ
   mattmoyer: U0DRP8H42
   maysunfaisal: U01DEHK2YUB
   mbbroberg: U18JTHMDY
   micahhausler: U1WJ1BZA5
   michael-valdron: U03LXKVS0SX
+  mickeyboxell: UH0K0EC6S
   microwavables: UAF606ESE
   mik-dass: UCUULSG1W
   mike-hoang: U03PDV4LS1Z
@@ -146,6 +149,7 @@ users:
   nate-double-u: U01AWL6BD62
   nawazkh: U03HJN1C81W
   ncdc: U0A4MJ62V
+  neoaggelos: U02GE88D3SQ
   nikhita: U2PQHGMLN
   nkubala: UA90QL2BE
   nrb: U7S597E00