[roll] Roll third_party/pigweed fe1f42f..871fd5f (2 commits)

871fd5f pw_containers: Add missing dependency
8fa1385 pw_bluetooth_sapphire: --config=fuchsia backends

GitOrigin-RevId: 3decf600b135f00bbbb115e49aad049e8e40905d
Change-Id: I3505ee79ffda3e20621fc862c1cf85514638f19a

third_party/flower

diff --git a/third_party/flower b/third_party/flower
index 6668145..f027955 100644
--- a/third_party/flower
+++ b/third_party/flower
@@ -504,7 +504,7 @@
              path="third_party/pigweed/src"
              remote="https://fuchsia.googlesource.com/third_party/pigweed.googlesource.com/pigweed/pigweed"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="fe1f42f752f6a847fe342a35b4c2c27fd5649fbd"/>
+             revision="871fd5feae66b1f9fe5f6422774e0bb9d6f96649"/>
     <project name="third_party/github.com/google/python_portpicker"
              gitsubmoduleof="fuchsia"
              path="third_party/python_portpicker/src"