[third_party/pigweed] Roll 10 commits

2f9dd9339f474a9 pw_{assert,log}: Add keep_dep tags to backend_impl
9fce2807fecf6d1 python: Switch from typing.Optional[...] to "... |
a7ae303c326f03b python: Switch from typing.Union to "|"
cccf6991fb2ac81 python: Use argparse.BooleanOptionalAction
29145e1bad586aa python: Use pathlib.Path.is_relative_to()
5ae66deb4c7d159 python: Switch from typing.Dict to dict
29485980c72340b docs: Add redirects infrastructure and docs contri
139448a532041f5 python: Switch from typing.Tuple to tuple
fd2ad3a688da8f0 python: Switch from typing.List to list
a9f055a32cc1ac0 pw_package: Match Emboss version used by Bazel

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: fa8e6c497fa2268..2f9dd9339f474a9
Roller-URL: https://ci.chromium.org/b/8753074279446778049
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I365cbaedf63f1eb01faab4b3087fcc9373c3f3ff
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/197473
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

third_party/pigweed

diff --git a/third_party/pigweed b/third_party/pigweed
index fa8e6c4..2f9dd93 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit fa8e6c497fa226871e9f13bb94aa78b5cab32aac
+Subproject commit 2f9dd9339f474a9a94c442162ad8f522ec314f0b