Marks Windows plugin_dependencies_test to be unflaky (#87048)

diff --git a/.ci.yaml b/.ci.yaml
index e0b1b1c..7cc3e24 100755
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -956,7 +956,6 @@
 
   - name: Windows plugin_dependencies_test
     builder: Windows plugin_dependencies_test
-    bringup: true
     properties:
       tags: >
         ["devicelab","hostonly"]