mark flaky (#83940)

diff --git a/.ci.yaml b/.ci.yaml
index db714e7..2b21085 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -1171,6 +1171,7 @@
 
   - name: mac_android_microbenchmarks
     builder: Mac_android microbenchmarks
+    bringup: true
     presubmit: false
     scheduler: luci