Update community files (#1011)

Signed-off-by: Knative Automation <[email protected]>

Author: knative-automation

OWNERS_ALIASES

@@ -185,6 +185,8 @@ aliases:
   - dprotaso
   - evankanderson
   - matzew
+  ux-approvers:
+  - prajjwalyd
   ux-wg-leads:
   - Leo6Leo
   - cali0707
@@ -194,4 +196,5 @@ aliases:
   - Leo6Leo
   - cali0707
   - mmejia02
+  - prajjwalyd
   - zainabhusain227