Bump fflate from 0.8.2 to 0.8.3

Bumps [fflate](https://github.com/101arrowz/fflate) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/101arrowz/fflate/releases)
- [Changelog](https://github.com/101arrowz/fflate/blob/master/CHANGELOG.md)
- [Commits](101arrowz/fflate@v0.8.2...v0.8.3)

---
updated-dependencies:
- dependency-name: fflate
  dependency-version: 0.8.3
  dependency-type: indirect
...

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Author: dependabot[bot]