[roll] Roll fuchsia [tefmocheck] Fix check for Boot-test success string.

For the check that checks whether we find the boot-test successs string
even if the test fails, we need to add exceptStrings to exclude the
string when it's reported in error logs. fxrev.dev/1265145 added the
string to the error message from ReadUntilMatch() so we need to add an
except string for that log as well.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1280484
Original-Revision: 25143c40d938e5df9137dbdfaef448aed26fe350
GitOrigin-RevId: 497d7618985d293911fa01769d8f0e9fe524e21a
Change-Id: I2185481b8d2bd57c95d7fcf39e34d9037d2503fc

stem

diff --git a/stem b/stem
index 5bfe4ff..2bea6f5 100644
--- a/stem
+++ b/stem
@@ -7,7 +7,7 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="2dd9782f0ab1fb5dd44d43f47282336967f6cbf9"/>
+            revision="25143c40d938e5df9137dbdfaef448aed26fe350"/>
   </imports>
   <projects>
     <project name="cobalt"