[third_party/pigweed] Roll 8 commits

8a3a2c71f9b2793 pw_kvs/flash_partition: Add EndOfWrittenData()
0a2cf87b2c8d38e pw_toolchain_bazel: Migrate to type-safe action na
0092efffb4b57f2 pw_toolchain_bazel: Require action labels in provi
255e7102792f6f5 pw_tool: Delete module
c00e9e430addee0 pw_tokenizer: Compensate for GCC template bug
76c38e54f2858c6 build: Use pre-release of rules_python
583824cfc85d7d5 pw_transfer: Remove duplicated Builder call
3791673ad2de05e SEED-0124: Claim SEED number

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: acad2170df4937c..8a3a2c71f9b2793
Roller-URL: https://ci.chromium.org/b/8758031785837667345
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If93a1a2ccdb6d25d2843812a66b62fdf56cd676f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/189016
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.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 acad217..8a3a2c7 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit acad2170df4937c509fe2cd7337a47627a783596
+Subproject commit 8a3a2c71f9b27938fff83ecb31e461f001028283