Bump NullGuard.Fody from 1.8.6 to 1.8.7
Bump NullGuard.Fody from 1.8.6 to 1.8.7

Bumps [NullGuard.Fody](https://github.com/Fody/NullGuard) from 1.8.6 to 1.8.7.
- [Release notes](https://github.com/Fody/NullGuard/releases)
- [Commits](https://github.com/Fody/NullGuard/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Fody/FodyAddinSamples,Fody/FodyAddinSamples