Bump Polly from 7.1.1 to 7.2.0 in /tests/FilterLists.Agent.Tests
Bump Polly from 7.1.1 to 7.2.0 in /tests/FilterLists.Agent.Tests

Bumps [Polly](https://github.com/App-vNext/Polly) from 7.1.1 to 7.2.0.
- [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-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
collinbarrett/FilterLists,collinbarrett/FilterLists,collinbarrett/FilterLists,collinbarrett/FilterLists,collinbarrett/FilterLists