[roll third_party/pigweed] pw_sensor: Update validator schema to JSON schema

While the pykwalify schema validator is more compact and produces more
verbose error output, the JSON schema format is compatible with several
IDEs which makes it easier to write sensor descriptor files.

Convert the pykwalify schema to JSON schema.

Original-Bug: b/293466822
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/202925

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: ef95198f19c71b6..23691711b80943a
Roller-URL: https://ci.chromium.org/b/8750894808786505633
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I537fae68c91af0139a40a7ffa05fde1368d8b259
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/203071
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 ef95198..2369171 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit ef95198f19c71b644634b14d4844b6b07a8c08fa
+Subproject commit 23691711b80943ada28bc9c805ee6ad3ded88387