Bump DiffEngine from 11.2.0 to 11.3.0 (#895)

Bumps [DiffEngine](https://github.com/VerifyTests/DiffEngine) from 11.2.0 to 11.3.0.
- [Release notes](https://github.com/VerifyTests/DiffEngine/releases)
- [Commits](VerifyTests/DiffEngine@11.2.0...11.3.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Shouldly/Shouldly.csproj

@@ -25,7 +25,7 @@
     <WarningsNotAsErrors>$(WarningsNotAsErrors);NU1505</WarningsNotAsErrors>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="DiffEngine" Version="11.2.0" />
+    <PackageReference Include="DiffEngine" Version="11.3.0" />
     <PackageReference Include="EmptyFiles" Version="4.4.0" PrivateAssets="None" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" Condition="$(Configuration) == 'Release'" />
     <None Include="..\..\assets\logo_128x128.png" Pack="true" PackagePath="assets" />