[roll] Roll third_party/pigweed Revert "pw_libc: Use .test convention"

This reverts commit 2f6d0ec3f0a81a1da1f5b24680de0798631049c5.

Reason for revert: The .test suffix confuses some check which expects certain file extensions, where it thinks the binary named .test should have no suffix or .exe etc.

Original change's description:
> pw_libc: Use .test convention
>
> Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/171793

# Not skipping CQ checks because original CL landed > 1 day ago.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/176510
Original-Revision: a25e33a59789e5e37b77232fd330f9f905cf395b
GitOrigin-RevId: c732d1afcd67520b9f28780d6e94270be7767a39
Change-Id: I62021e0bb50fce1003ac5d1007429849ea24310e
diff --git a/third_party/flower b/third_party/flower
index 96e7fa1..bd2c981 100644
--- a/third_party/flower
+++ b/third_party/flower
@@ -450,7 +450,7 @@
              path="third_party/pigweed/src"
              remote="https://pigweed.googlesource.com/pigweed/pigweed"
              gerrithost="https://pigweed-review.googlesource.com"
-             revision="aba67f9a2a71cbcc7af1a1881b046a0a7bd7e0ca"/>
+             revision="a25e33a59789e5e37b77232fd330f9f905cf395b"/>
     <project name="third_party/github.com/google/python_portpicker"
              gitsubmoduleof="fuchsia"
              path="third_party/python_portpicker/src"