[third_party/pigweed] Roll 2 commits

9913b3beb9551d4 pw_channel: Only open read/write if channel is rea
ed678303dec5a41 pw_thread: Fix thread snapshot service test

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: e07a08914d79ea1..9913b3beb9551d4
Roller-URL: https://ci.chromium.org/b/8746490871108546561
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I0a07333413bfc08bd08085e24cc2c117e007fc7f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/212332
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.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 e07a089..9913b3b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e07a08914d79ea1c7cf3d337b2d5e93ba91c37ee
+Subproject commit 9913b3beb9551d41628a05773bc8d174491aa7f4