[roll] Roll fuchsia [forensics] Migrate internal cobalt utility

* Our internal eventType has now a 1-to-1 relationship with |fuchsia::metrics::MetricEventLogger|
  * In cobalt 1.1 we use 2 methods (LogInteger & LogOccurrence) instead of 4 to log events.
* Events that did not have a count now default to 1 to avoid being ignored by MetricEventLogger::LogOccurrence()
* Modified fake cobalt utility for integration tests to handle multiple events with the same event type.

Original-Bug: 74516

TESTED=`fx test feedback-data-tests`
TESTED=`fx test last-reboot-tests`
TESTED=`fx test crash-reports-tests`
TESTED=`fx test feedback-utils-tests`
TESTED=`fx test cobalt_unittest`
TESTED= manual with `also_log_locally` flag.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/529131
Original-Revision: 45692c0eb2a8e0e4ed1c75b89228df1a1f1640b8
GitOrigin-RevId: 06ee6de29a25e6b145e360f17fe87304147db273
Change-Id: I2145b7901e04d176e7185a93d5618b91afc8803f
diff --git a/stem b/stem
index c871e3b..e3f371a 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="2b1ebd45c2e26f33d1bbb4fbc103f60357c321e9"/>
+             revision="45692c0eb2a8e0e4ed1c75b89228df1a1f1640b8"/>
   </projects>
   <hooks>
     <hook name="install-environment"