Bump DiffEngine from 12.3.0 to 12.3.1 in /src

Bumps [DiffEngine](https://github.com/VerifyTests/DiffEngine) from 12.3.0 to 12.3.1.
- [Release notes](https://github.com/VerifyTests/DiffEngine/releases)
- [Commits](VerifyTests/DiffEngine@12.3.0...12.3.1)

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

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

src/Verify.ClipboardAccept/Verify.ClipboardAccept.csproj

@@ -4,7 +4,7 @@
     <TargetFrameworks>$(TargetFrameworks);net6.0;net7.0;net8.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="DiffEngine" Version="12.3.0" />
+    <PackageReference Include="DiffEngine" Version="12.3.1" />
     <PackageReference Include="ConfigureAwait.Fody" Version="3.3.2" PrivateAssets="All" />
     <PackageReference Include="Fody" Version="6.8.0" PrivateAssets="All" />
     <PackageReference Include="TextCopy" Version="6.2.1" />

src/Verify/Verify.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="System.IO.Compression" Version="4.3.0" Condition="$(TargetFrameworkIdentifier) == '.NETFramework'" />
     <PackageReference Include="System.IO.Hashing" Version="7.0.0" Condition="$(TargetFrameworkIdentifier) == '.NETFramework' or $(TargetFramework) == 'net6.0' or $(TargetFramework) == 'net7.0' or $(TargetFramework) == 'net8.0'" />
     <PackageReference Include="System.Memory" Version="4.5.5" Condition="$(TargetFrameworkIdentifier) == '.NETStandard' or $(TargetFrameworkIdentifier) == '.NETFramework' or $(TargetFramework.StartsWith('netcoreapp2'))" />
-    <PackageReference Include="DiffEngine" Version="12.3.0" />
+    <PackageReference Include="DiffEngine" Version="12.3.1" />
     <PackageReference Include="EmptyFiles" Version="4.5.2" PrivateAssets="None" />
     <PackageReference Include="ConfigureAwait.Fody" Version="3.3.2" PrivateAssets="All" />
     <PackageReference Include="Fody" Version="6.8.0" PrivateAssets="All" />