[roll third_party/pigweed] pw_build: Fix type hint

With dict[str, str | x | y | z], Python cannot properly infer the type
of a dict[str, str]. Use a Mapping type hint instead to fix.

Original-Bug: b/338462905
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/208137
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 9cbecdc781e3706..e59fb801bd8584c
Roller-URL: https://ci.chromium.org/b/8748995082516571169
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ib90dc4f6c48cf301395f43924c14a428bdd9e1de
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/208021
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/third_party/pigweed b/third_party/pigweed
index 9cbecdc..e59fb80 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9cbecdc781e37065da96478e85b1ea4de0e7911e
+Subproject commit e59fb801bd8584caea9258547b1161b34c0c183e