Bump etherparse from 0.20.2 to 0.20.3

Bumps [etherparse](https://github.com/JulianSchmid/etherparse) from 0.20.2 to 0.20.3.
- [Release notes](https://github.com/JulianSchmid/etherparse/releases)
- [Changelog](https://github.com/JulianSchmid/etherparse/blob/master/changelog.md)
- [Commits](JulianSchmid/etherparse@v0.20.2...v0.20.3)

---
updated-dependencies:
- dependency-name: etherparse
  dependency-version: 0.20.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]