Bump Polly from 7.2.4 to 8.0.0 (#548)

Bumps [Polly](https://github.com/App-vNext/Polly) from 7.2.4 to 8.0.0.
- [Release notes](https://github.com/App-vNext/Polly/releases)
- [Changelog](https://github.com/App-vNext/Polly/blob/main/CHANGELOG.md)
- [Commits](App-vNext/Polly@7.2.4...8.0.0)

---
updated-dependencies:
- dependency-name: Polly
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/Tingle.EventBus/Tingle.EventBus.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="7.0.0" />
-    <PackageReference Include="Polly" Version="7.2.4" />
+    <PackageReference Include="Polly" Version="8.0.0" />
     <PackageReference Include="Polly.Contrib.WaitAndRetry" Version="1.1.1" />
     <PackageReference Include="System.Memory.Data" Version="7.0.0" />
   </ItemGroup>