chore: optimize KBR_UVICORN_TIMEOUT_KEEP_ALIVE value

Author: Chao Huang

k8s/application/backend-configmap.yaml.template

@@ -22,7 +22,7 @@ data:
   KBR_DATABASE_MAX_OVERFLOW: "20"
   KBR_EMAIL_WHITELIST_ENABLED: "false"
   # Uvicorn server settings
-  KBR_UVICORN_TIMEOUT_KEEP_ALIVE: "120"
+  KBR_UVICORN_TIMEOUT_KEEP_ALIVE: "650"
   KBR_UVICORN_LIMIT_CONCURRENCY: "100"
   KBR_UVICORN_LIMIT_MAX_REQUESTS: "10000"
   # Streaming settings