roll: pigweed, pw_toolchain: pw_build: Add mod proc_macro to rust macro targets

Gnaw which translates Cargo.toml to GN does not reads the `lib` section
in Cargo manifest. Some crates puts `proc_macro` in `lib` and does not
specify `use proc_macro` in the source. This change is a workaround for
building those crates.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/230013

https://pigweed.googlesource.com/pigweed/pigweed
pigweed, pw_toolchain Rolled-Commits: d0655bf838d543c..234632dd4e30bd4
Roller-URL: https://ci.chromium.org/b/8739029624847358817
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4a52c04a1d8807d9375a76980625c2f77b303bb3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/230742
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/MODULE.bazel b/MODULE.bazel
index 0e35c58..a36fb49 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -48,8 +48,8 @@
     module_name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-08-21.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8739030015109613889.
-    commit = "d0655bf838d543ce826c5ec9e88feb524d314b2a",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8739029624847358817.
+    commit = "234632dd4e30bd45ca03b075eb5f75c6acb70d64",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )
 
@@ -57,8 +57,8 @@
     module_name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-08-21.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8739030015109613889.
-    commit = "d0655bf838d543ce826c5ec9e88feb524d314b2a",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8739029624847358817.
+    commit = "234632dd4e30bd45ca03b075eb5f75c6acb70d64",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
     strip_prefix = "pw_toolchain_bazel",
 )