[roll third_party/pigweed] rp2040: Raise minimal stack size to 1KB

The old stack size was too small to run many Pigweed unit tests.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/210517
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https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: dc5c87c532e5c75..bb558ed3c239189
Roller-URL: https://ci.chromium.org/b/8747374092466467073
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I8531c9fd5cad5195c93a4dd3e4a92748b5ae5b87
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/210611
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Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index dc5c87c..bb558ed 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit dc5c87c532e5c75938c4d9b99bffbae67d7172be
+Subproject commit bb558ed3c239189bd9b88c33594bd73f73efc272