Bump third_party/pigweed/repo from 1f12d06 to b3e7f59

Bumps [third_party/pigweed/repo](https://github.com/google/pigweed) from `1f12d06` to `b3e7f59`.
- [Commits](google/pigweed@1f12d06...b3e7f59)

---
updated-dependencies:
- dependency-name: third_party/pigweed/repo
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

third_party/pigweed/repo

@@ -0,0 +1 @@
+b3e7f598fda9d03aca04e26ae0a691a117404473