Bump PeterO.Cbor from 3.0.0 to 4.0.0 in /test/Tester.net
Bump PeterO.Cbor from 3.0.0 to 4.0.0 in /test/Tester.net

Bumps [PeterO.Cbor](https://github.com/peteroupc/CBOR) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/peteroupc/CBOR/releases)
- [Changelog](https://github.com/peteroupc/CBOR/blob/master/History.md)
- [Commits](https://github.com/peteroupc/CBOR/compare/v3.0.0...v4.0.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
moducom/mc-coap,moducom/mc-coap,moducom/mc-coap,moducom/mc-coap,moducom/mc-coap