Bump Microsoft.AspNetCore.All from 2.1.5 to 2.1.6 in /src/Miningcore (#473)
Bump Microsoft.AspNetCore.All from 2.1.5 to 2.1.6 in /src/Miningcore (#473)

Bumps [Microsoft.AspNetCore.All](https://github.com/aspnet/AspNetCore) from 2.1.5 to 2.1.6.
- [Release notes](https://github.com/aspnet/AspNetCore/releases)
- [Changelog](https://github.com/aspnet/AspNetCore/blob/master/docs/CrossRepoBreakingChanges.md)
- [Commits](https://github.com/aspnet/AspNetCore/compare/2.1.5...2.1.6)

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