[roll third_party/pigweed] third_party/fuchsia: Replace list with typing.List

Use typing.List[] in place of list[] which is not supported by
Python 3.8.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/111532

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 5b3f0ecce3272f2..9be09a1fee2f705
Roller-URL: https://ci.chromium.org/b/8802305457284223905
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iff62ba16064470467a8e35daf7e1ef1eb3455ef1
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/111571
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 5b3f0ec..9be09a1 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5b3f0ecce3272f284c30b03fc1bc8a73f81b4e01
+Subproject commit 9be09a1fee2f705180d1568b26d58b53f4d222d3