(deps): Bump Polly from 8.6.1 to 8.6.4

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

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

Author: dependabot[bot]

new-cli/Directory.Packages.props

@@ -21,7 +21,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageVersion>
     <PackageVersion Include="NUnit3TestAdapter" Version="5.0.0" />
-    <PackageVersion Include="Polly" Version="8.6.1" />
+    <PackageVersion Include="Polly" Version="8.6.4" />
     <PackageVersion Include="Roslynator.Analyzers" Version="4.14.1" />
     <PackageVersion Include="Roslynator.Formatting.Analyzers" Version="4.14.1" />
     <!-- specific packages -->