[roll third_party/pigweed] pw_{cli,presubmit}: Move plural()

Moves the `plural()` utility function to pw_cli so it may be used more
widely without a dependency on pw_presubmit.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/201630

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: d909f52cfaf5652..bab24b648730fc3
Roller-URL: https://ci.chromium.org/b/8751721569290427889
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ib8e4f7109bc410caae00812bfc94b21b52dee3e0
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/201633
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 d909f52..bab24b6 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit d909f52cfaf5652fe102f889261b8d69c6877315
+Subproject commit bab24b648730fc354751b13192c0a254c64b0ca3