fix: upgrade peter-evans library from v1 to v4

Author: jaychang99

.github/workflows/ci.yml

@@ -60,11 +60,18 @@ jobs:
           milliseconds: 2000
 
       - name: Post comment on PR
-        uses: peter-evans/create-or-update-comment@v1
+        uses: peter-evans/create-or-update-comment@v4
         with:
           issue-number: ${{ github.event.pull_request.number }}
-          body:
-            'The test took ${{ steps.test-action.outputs.time }} milliseconds.'
+
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown** :sparkles:
+            - Created by [create-or-update-comment][1]
+            - and testing openapi diff 
+
+            [1]: https://github.com/peter-evans/create-or-update-comment
+          reactions: '+1'
 
       - name: Print Output
         id: output