Bump Verify.DiffPlex from 3.0.0 to 3.1.2 (#2299)

Bumps [Verify.DiffPlex](https://github.com/VerifyTests/Verify.DiffPlex) from 3.0.0 to 3.1.2.
- [Release notes](https://github.com/VerifyTests/Verify.DiffPlex/releases)
- [Commits](VerifyTests/Verify.DiffPlex@3.0.0...3.1.2)

---
updated-dependencies:
- dependency-name: Verify.DiffPlex
  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>

Author: dependabot[bot]

tests/SilkTouch/SilkTouch/Silk.NET.SilkTouch.UnitTests.csproj

@@ -14,7 +14,7 @@
     <PackageReference Update="NUnit" Version="4.2.2" />
     <PackageReference Include="Silk.NET.BuildTools" Version="2.21.0" />
     <PackageReference Include="System.Linq.Async" Version="6.0.1" />
-    <PackageReference Include="Verify.DiffPlex" Version="3.0.0" />
+    <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageReference Include="Verify.NUnit" Version="28.1.2" />
     <None Include="**/*.received.*" />
     <None Include="**/*.verified.*" />