Add kotewar and remove phantsure from auto-assignees lists

.github/auto_assign.yml

@@ -6,7 +6,7 @@ addAssignees: false
 
 # A list of reviewers to be added to pull requests (GitHub user name)
 reviewers:
-  - phantsure
+  - kotewar
   - aparna-ravindra
   - tiwarishub
   - vsvipul

.github/workflows/auto-assign-issues.yml

@@ -11,5 +11,5 @@ jobs:
             - name: 'Auto-assign issue'
               uses: pozil/auto-assign-issue@v1.4.0
               with:
-                  assignees: phantsure,tiwarishub,aparna-ravindra,vsvipul,bishal-pdmsft
+                  assignees: kotewar,tiwarishub,aparna-ravindra,vsvipul,bishal-pdmsft
                   numOfAssignee: 1