roll: pigweed targets: Remove implicit extern C

`main` function is by default considered `extern C` and adding it
explicitly creates a pedantic warning causing failures with new clang
toolchain.

Original-Bug: 366374135
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/237092
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: a5a199593f1375177d5805f882f303d4c8b8cea2

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: cc365b0d0e8087..a5a199593f1375
Roller-URL: https://ci.chromium.org/b/8736058729365372289
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ifc9cb9fc2a84c813b91b45b18c1093ca2b00414a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/237280
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/MODULE.bazel b/MODULE.bazel
index c31fde3..980989d 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -49,8 +49,8 @@
     module_name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-09-22.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8736132812050698113.
-    commit = "cc365b0d0e8087f01a9fd91d58a91448d1bcb963",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8736058729365372289.
+    commit = "a5a199593f1375177d5805f882f303d4c8b8cea2",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )
 
@@ -58,8 +58,8 @@
     module_name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-09-22.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8736132812050698113.
-    commit = "cc365b0d0e8087f01a9fd91d58a91448d1bcb963",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8736058729365372289.
+    commit = "a5a199593f1375177d5805f882f303d4c8b8cea2",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
     strip_prefix = "pw_toolchain_bazel",
 )