Bump Polyfill from 8.0.0-beta.5 to 8.0.0

---
updated-dependencies:
- dependency-name: Polyfill
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -8,7 +8,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageVersion Include="NServiceBus" Version="9.2.7" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.155" />
-    <PackageVersion Include="Polyfill" Version="8.0.0-beta.5" />
+    <PackageVersion Include="Polyfill" Version="8.0.0" />
     <PackageVersion Include="Verify" Version="30.3.1" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.XunitV3" Version="30.3.1" />