chore(deps): bump Verify.MSTest from 26.1.5 to 26.1.6 in the all group

Bumps the all group with 1 update: [Verify.MSTest](https://github.com/VerifyTests/Verify).


Updates `Verify.MSTest` from 26.1.5 to 26.1.6
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@26.1.5...26.1.6)

---
updated-dependencies:
- dependency-name: Verify.MSTest
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
...

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

src/Directory.Packages.props

@@ -20,7 +20,7 @@
     <PackageVersion Include="Avalonia" Version="11.1.1" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing.MSTest" Version="1.1.2" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.10.0" />
-    <PackageVersion Include="Verify.MSTest" Version="26.1.5" />
+    <PackageVersion Include="Verify.MSTest" Version="26.1.6" />
     <PackageVersion Include="Verify.SourceGenerators" Version="2.3.0" />
     <PackageVersion Include="H.Generators.Tests.Extensions" Version="1.22.0" />
   </ItemGroup>