Bump third_party/pigweed/repo from b5cec17 to db10e1a

Bumps [third_party/pigweed/repo](https://github.com/google/pigweed) from `b5cec17` to `db10e1a`.
- [Commits](google/pigweed@b5cec17...db10e1a)

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

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