build(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] <[email protected]>

src/Directory.Packages.props

@@ -22,6 +22,6 @@
     <PackageVersion Include="SharpToken" Version="2.0.3" />
     <PackageVersion Include="System.ValueTuple" Version="4.5.0" />
     <PackageVersion Include="TiktokenSharp" Version="1.1.4" />
-    <PackageVersion Include="Verify.MSTest" Version="26.1.5" />
+    <PackageVersion Include="Verify.MSTest" Version="26.1.6" />
   </ItemGroup>
 </Project>