Bump DiffPlex from 1.7.0 to 1.7.1

Bumps [DiffPlex](https://github.com/mmanela/diffplex) from 1.7.0 to 1.7.1.
- [Release notes](https://github.com/mmanela/diffplex/releases)
- [Commits](https://github.com/mmanela/diffplex/commits)

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

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

Author: dependabot[bot]

src/Hocon.API.Tests/Hocon.API.Tests.csproj

@@ -29,7 +29,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="DiffPlex" Version="1.7.0" />
+    <PackageReference Include="DiffPlex" Version="1.7.1" />
     <PackageReference Include="ApiApprover" Version="9.3.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(TestSdkVersion)" />
     <PackageReference Include="xunit" Version="$(XunitVersion)" />