[roll] Roll fuchsia Revert "[starnix] Run gVisor tests in debian container"

This reverts commit 6f47c2694d7b25833dc2aae8c3cf03fba5d0494f.

Reason for revert: see https://fxbug.dev/127907, causing flakes in fuchsia-pkg://fuchsia.com/starnix_gvisor_tests#meta/tcp_socket_test.cm

Original-Bug: 127907

Original change's description:
> [starnix] Run gVisor tests in debian container
>
> This change re-enables the gVisor tests and runs them in the debian
> container.
>
> Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/850637

No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/862697
Original-Revision: c66900f971d30ed534a4cee63a6ecf9b1faf9510
GitOrigin-RevId: c07ab045d4d096319a106a862c95ec454851b913
Change-Id: Icbb4bc0049ba820d6179b657894e5b508c325a56
diff --git a/stem b/stem
index 206b0f3..17e61f1 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="b2f9adc087d415098b4bc29a54361e1191eea725"/>
+             revision="c66900f971d30ed534a4cee63a6ecf9b1faf9510"/>
   </projects>
   <hooks>
     <hook name="install-environment"