Bump SerialPortLib from 1.0.16 to 1.0.18
Bump SerialPortLib from 1.0.16 to 1.0.18

Bumps [SerialPortLib](https://github.com/genielabs/serialport-lib-dotnet) from 1.0.16 to 1.0.18.
- [Release notes](https://github.com/genielabs/serialport-lib-dotnet/releases)
- [Commits](https://github.com/genielabs/serialport-lib-dotnet/compare/1.0.16...1.0.18)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Bounz/zwave-lib-dotnet