Bump Polly from 8.1.0 to 8.6.4

---
updated-dependencies:
- dependency-name: Polly
  dependency-version: 8.6.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/Org.OpenAPITools/Org.OpenAPITools.csproj

@@ -25,7 +25,7 @@
     <PackageReference Include="JsonSubTypes" Version="2.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="RestSharp" Version="112.0.0" />
-    <PackageReference Include="Polly" Version="8.1.0" />
+    <PackageReference Include="Polly" Version="8.6.4" />
   </ItemGroup>
 
   <ItemGroup>