[roll] Roll fuchsia [superproject] Roll third_party/mesa [lavapipe/fuchsia] Generated file for buffer collection ext.

The buffer collection extension is contained in a separate source
set which didn't explicitly depend on the target which generates
`lvp_endpoints.h`.  This results in a race condition in the build,
where sometimes the file isn't available when it is needed.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/1047313
Original-Revision: 47bc656ecd6cc432ec5ba5d465ab3a8f2b8ce649
GitOrigin-RevId: 6ae6c2c2501e46271c00711e9ee4974e88121f76
Roller-URL: https://ci.chromium.org/b/8748002688886885361
CQ-Do-Not-Cancel-Tryjobs: true
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1047264
Original-Revision: cc0e6e437a8d0e8a5a7bcfef69ee63d16f0bf5ad
Change-Id: Ic533c5d78a6e55edc73bff85854951572ae3293d
diff --git a/stem b/stem
index 4bf3a88..b75d9b7 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="bf7cba85d0424ed474b94cd071df3c1674c53c7e"/>
+             revision="cc0e6e437a8d0e8a5a7bcfef69ee63d16f0bf5ad"/>
   </projects>
   <hooks>
     <hook name="install-environment"