Marks Linux run_debug_test_linux to be unflaky (#121237)

Co-authored-by: Loïc Sharma <737941+loic-sharma@users.noreply.github.com>

.ci.yaml

@@ -719,7 +719,6 @@ targets:
 
   - name: Linux run_debug_test_linux
     recipe: devicelab/devicelab_drone
-    bringup: true
     timeout: 60
     properties:
       xvfb: "1"