[third_party/pigweed] Roll 7 commits

8d296361c1f6074 pw_base64: Add module metadata
9ea9ef130481b82 pw_multibuf: AdvanceToData in iterator constructor
98c249943f7a441 pw_blob_store: Add module metadata
30abcad0910ff68 pw_android_toolchain: Add module metadata
732c882e8ec9bfd pw_async: Add module metadata
3fa03cadd9b06a1 pw_cli: Fish shell completion
f4da9803f0e4e34 pw_presubmit: Add module metadata

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: e202b0b771cd818..8d296361c1f6074
Roller-URL: https://ci.chromium.org/b/8745844129002776625
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Id635a13aba8a93ae230b8f9643839f104b18f229
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/214554
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 e202b0b..8d29636 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e202b0b771cd8188ee6d27cfa0a83f2c69ab3e43
+Subproject commit 8d296361c1f60742d9c6a970fc8f645aae300e89