Bump Microsoft.Extensions.Configuration.Json from 3.1.7 to 3.1.8
Bump Microsoft.Extensions.Configuration.Json from 3.1.7 to 3.1.8

Bumps [Microsoft.Extensions.Configuration.Json](https://github.com/aspnet/Extensions) from 3.1.7 to 3.1.8.
- [Release notes](https://github.com/aspnet/Extensions/releases)
- [Commits](https://github.com/aspnet/Extensions/compare/v3.1.7...v3.1.8)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
mattgwagner/Cash-Flow-Projection,mattgwagner/Cash-Flow-Projection,mattgwagner/Cash-Flow-Projection,mattgwagner/Cash-Flow-Projection