Bump Verify.MSTest from 30.19.2 to 31.2.0

---
updated-dependencies:
- dependency-name: Verify.MSTest
  dependency-version: 31.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

tests/Mathematics.NET.SourceGenerators.Public.Tests/Mathematics.NET.SourceGenerators.Public.Tests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.0.4" />
     <PackageReference Include="Microsoft.Testing.Extensions.TrxReport" Version="1.8.4" />
     <PackageReference Include="MSTest" Version="3.10.4" />
-    <PackageReference Include="Verify.MSTest" Version="30.19.2" />
+    <PackageReference Include="Verify.MSTest" Version="31.2.0" />
     <PackageReference Include="Verify.SourceGenerators" Version="2.5.0" />
   </ItemGroup>