chore(workflow): update changelog generator to include refactor label (#10656)

chore:(workflow) update changelog generator to include refactor label

Author: chenjiahan

.github/pr-labeler.yml

@@ -8,3 +8,5 @@
   - "/^fix/"
 "release: document":
   - "/^docs/"
+"release: refactor":
+  - "/^refactor/"

.github/release.yml

@@ -14,12 +14,15 @@ changelog:
     - title: Performance Improvements ⚡
       labels:
         - "release: performance"
-    - title: Exciting New Features 🎉
+    - title: New Features 🎉
       labels:
         - "release: feature"
     - title: Bug Fixes 🐞
       labels:
         - "release: bug fix"
+    - title: Refactor 🔨
+      labels:
+        - "release: refactor"
     - title: Document Updates 📖
       labels:
         - "release: document"