Bump rewriter from 56ae1fe to b1e8367 (#1885)

Bumps [rewriter](https://github.com/mit-plv/rewriter) from `56ae1fe` to `b1e8367`.
- [Release notes](https://github.com/mit-plv/rewriter/releases)
- [Commits](mit-plv/rewriter@56ae1fe...b1e8367)

---
updated-dependencies:
- dependency-name: rewriter
  dependency-type: direct:production
...

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