Update dependency Polly to 8.6.3 (#14690)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Directory.Packages.props

@@ -59,7 +59,7 @@
     <PackageVersion Include="prometheus-net.AspNetCore" Version="8.2.1" />
     <PackageVersion Include="prometheus-net.DotNetRuntime" Version="4.4.1" />
     <PackageVersion Include="prometheus-net" Version="8.2.1" />
-    <PackageVersion Include="Polly" Version="8.6.2" />
+    <PackageVersion Include="Polly" Version="8.6.3" />
     <PackageVersion Include="Serilog.AspNetCore" Version="9.0.0" />
     <PackageVersion Include="Serilog.Enrichers.Thread" Version="4.0.0" />
     <PackageVersion Include="Serilog.Expressions" Version="5.0.0" />