[roll] Roll fuchsia [superproject] Roll third_party/pigweed b816ed5..a75b716 (5 commits)

a75b716 pw_preprocessor: Test GCC/Clang diagnostic modification macros
80c7c74 third_party/fuchsia: Update patch to ignore warnings in result.h
6a840f0 third_party/fuchsia: Copybara import
ea78a58 pw_preprocessor: Introduce PW_MODIFY_DIAGNOSTIC_CLANG
a759e7d pw_thread: Disable test_thread_context_facade_test on Pi Pico

GitOrigin-RevId: aa40736b9ebb03f2a76d3a94045b080666f873bd
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1105483
Original-Revision: f75fadeaf54008877066051d7b89dd09a77872a4
Change-Id: I339d60b0c61747a3f481939b795d78e4eb90c0fd
diff --git a/stem b/stem
index 3b7f33e..aae0fcf 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="02d658e33fa2333197490cb948f813c0e59c2b46"/>
+             revision="f75fadeaf54008877066051d7b89dd09a77872a4"/>
   </projects>
   <hooks>
     <hook name="install-environment"