[roll] Roll fuchsia [fint] Add goma_job_count to context.proto

Recipes need to be able to configure the number of Goma jobs used by
Ninja, so `fint build` will need to honor this field when building with
Goma enabled.

Original-Bug: 67861
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/491318
Original-Revision: 5cc3a6e42acc2117386f6bb84c42f9a81dfe9af5
GitOrigin-RevId: 007d7df7741c712d06067f2f68709bbe5c345cd8
Change-Id: I7234d5220e6d435f7a9ee8d32ff78c371926c6cc
diff --git a/stem b/stem
index f1ea187..9b3ab90 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="6ea182a3480d680637b4e1450cc1dc8da16cb61c"/>
+             revision="5cc3a6e42acc2117386f6bb84c42f9a81dfe9af5"/>
   </projects>
   <hooks>
     <hook name="install-environment"