Bump Polly from 8.6.5 to 8.6.6 (#127)

---
updated-dependencies:
- dependency-name: Polly
  dependency-version: 8.6.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

source/TeamCityBuildStatsScraper.csproj

@@ -9,7 +9,7 @@
     <ItemGroup>
         <PackageReference Include="Azure.Identity" Version="1.18.0" />
         <PackageReference Include="Azure.ResourceManager.Storage" Version="1.6.0" />
-        <PackageReference Include="Polly" Version="8.6.5" />
+        <PackageReference Include="Polly" Version="8.6.6" />
         <PackageReference Include="Prometheus.Client" Version="6.2.0" />
         <PackageReference Include="Prometheus.Client.DependencyInjection" Version="1.6.0" />
         <PackageReference Include="Prometheus.Client.MetricServer" Version="7.0.0" />