fix: appengine assignments team change (#10256)

* fix: appengine assignments team change

* Update .github/blunderbuss.yml

* Update .github/blunderbuss.yml

---------

Co-authored-by: Leah E. Cole <[email protected]>

Author: engelke

.github/blunderbuss.yml

@@ -161,6 +161,10 @@ assign_issues_by:
       - "api: auth"
     to:
       - arithmetic1728
+  - labels:
+      - "api: appengine"
+    to:
+      - jinglundong
 
 
 ###
@@ -169,7 +173,6 @@ assign_issues_by:
 assign_prs_by:
   # DEE teams
   - labels:
-      - "api: appengine"
       - "api: cloudbuild"
       - "api: cloudscheduler"
       - "api: cloudtasks"
@@ -314,7 +317,10 @@ assign_prs_by:
       - "api: auth"
     to:
       - arithmetic1728
-
+  - labels:
+      - "api: appengine"
+    to:
+      - jinglundong
 assign_issues:
   - GoogleCloudPlatform/python-samples-owners