chore(deps): update dependency xunit.runner.visualstudio to 3.1.2

Ref: PACT-445

Author: pactflow-renovate-bot[bot]

tests/tests.csproj

@@ -8,7 +8,7 @@
     <PackageReference Include="PactNet" Version="5.0.1" />
     <PackageReference Include="PactNet.Output.Xunit" Version="1.0.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.1">
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.2">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>