[roll third_party/pigweed] pw_presubmit: Add GCC CMake "step"

This step does not yet pass.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/79240

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 6e92d78fe513102..4c26987003a2cda
Roller-URL: https://ci.chromium.org/b/8824585133310006817
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8824585133310006817
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iad2646e915a166cbcecd033426331ea6b993c5db
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/79520
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 6e92d78..4c26987 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 6e92d78fe513102db5168d3115a13809035152eb
+Subproject commit 4c26987003a2cda4d4f7bdf6a1c647192b842723