[third_party/pigweed] Roll 2 commits

e3c8e94cbffee47 pw_transfer: Implement adaptive windowing in Pytho
79c1f24e16c01c3 pw_web: Use existing col data when adding new View

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 3fbcf41574028ef..e3c8e94cbffee47
Roller-URL: https://ci.chromium.org/b/8750570161062810081
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I08f94143de7a7e03582b167344095a7ea017e535
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/203630
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 3fbcf41..e3c8e94 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 3fbcf41574028ef01717ba5c35ee86c587182f4e
+Subproject commit e3c8e94cbffee472958ddd04c129494aed306ee3