[roll] Roll fuchsia [coverage] Disable flaky stress runner integ test

Until the flake is resolved, this test will not collect coverage stats.
Sorry.

Original-Bug: 114727
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/758564
Original-Revision: 4473d26298e0d569af5a39d97b67452e31cd276f
GitOrigin-RevId: 76cfc41af7765c83f55b35a19c3e2c6b5631d580
Change-Id: I9d0ea4f7806be2d58828fd4f9e21d719ead1361b

stem

diff --git a/stem b/stem
index 5e969b1..8d5f00e 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="06d301fac85a2eb5ad2c0a153ce5195e07858086"/>
+             revision="4473d26298e0d569af5a39d97b67452e31cd276f"/>
   </projects>
   <hooks>
     <hook name="install-environment"