chore(deps): bump serialport from 9.2.7 to 9.2.8

Bumps [serialport](https://github.com/serialport/node-serialport) from 9.2.7 to 9.2.8.
- [Release notes](https://github.com/serialport/node-serialport/releases)
- [Changelog](https://github.com/serialport/node-serialport/blob/master/CHANGELOG.md)
- [Commits](https://github.com/serialport/node-serialport/compare/@serialport/[email protected]...@serialport/[email protected])

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]