Bump Polyfill from 1.26.0 to 1.27.0 in /src

Bumps [Polyfill](https://github.com/SimonCropp/Polyfill) from 1.26.0 to 1.27.0.
- [Commits](SimonCropp/Polyfill@1.26.0...1.27.0)

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

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

src/DiffEngine/DiffEngine.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="Fody" Version="6.8.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" Condition="$(Configuration) == 'Release'" />
     <PackageReference Include="ProjectDefaults" Version="1.0.91" PrivateAssets="all" />
-    <PackageReference Include="Polyfill" Version="1.26.0" PrivateAssets="all" />
+    <PackageReference Include="Polyfill" Version="1.27.0" PrivateAssets="all" />
     <PackageReference Include="System.Runtime.InteropServices.RuntimeInformation" Version="4.3.0" Condition="$(TargetFramework) == 'net461'" />
     <PackageReference Include="System.Management" Version="6.0.2" />
   </ItemGroup>