Bump Polly from 6.1.0 to 6.1.1 in /src/Miningcore (#472)
Bump Polly from 6.1.0 to 6.1.1 in /src/Miningcore (#472)

Bumps [Polly](https://github.com/App-vNext/Polly) from 6.1.0 to 6.1.1.
- [Release notes](https://github.com/App-vNext/Polly/releases)
- [Changelog](https://github.com/App-vNext/Polly/blob/master/CHANGELOG.md)
- [Commits](https://github.com/App-vNext/Polly/commits)

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