Bump the polly group with 1 update

Bumps the polly group with 1 update: [Polly](https://github.com/App-vNext/Polly).

- [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...8.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

src/BUTR.Site.NexusMods.Server/BUTR.Site.NexusMods.Server.csproj

@@ -41,7 +41,7 @@
     <PackageReference Include="OpenTelemetry.Instrumentation.Quartz" Version="1.0.0-alpha.3" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Runtime" Version="1.5.1" />
     <PackageReference Include="OpenTelemetry.ResourceDetectors.Container" Version="1.0.0-beta.4" />
-    <PackageReference Include="Polly" Version="7.2.4" />
+    <PackageReference Include="Polly" Version="8.1.0" />
     <PackageReference Include="Polly.Contrib.WaitAndRetry" Version="1.1.1" />
     <PackageReference Include="Quartz" Version="3.7.0" />
     <PackageReference Include="Quartz.Extensions.DependencyInjection" Version="3.7.0" />