Bump Verify.DiffPlex from 2.3.0 to 3.1.2

Bumps [Verify.DiffPlex](https://github.com/VerifyTests/Verify.DiffPlex) from 2.3.0 to 3.1.2.
- [Release notes](https://github.com/VerifyTests/Verify.DiffPlex/releases)
- [Commits](VerifyTests/Verify.DiffPlex@2.3.0...3.1.2)

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

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

Author: dependabot[bot]

Diff for: src/Akka.Hosting.API.Tests/Akka.Hosting.API.Tests.csproj

@@ -19,7 +19,7 @@
         </PackageReference>
         <PackageReference Include="PublicApiGenerator" Version="11.1.0" />
         <PackageReference Include="Verify.Xunit" Version="22.11.1" />
-        <PackageReference Include="Verify.DiffPlex" Version="2.3.0" />
+        <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
     </ItemGroup>
 
     <ItemGroup>