Bump the testing group with 1 update

Bumps xunit.runner.visualstudio from 3.1.1 to 3.1.2

---
updated-dependencies:
- dependency-name: xunit.runner.visualstudio
  dependency-version: 3.1.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: testing
...

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

Author: dependabot[bot]

test/Tests.csproj

@@ -24,7 +24,7 @@
     <PackageReference Include="Shouldly" Version="4.3.0" />
     <PackageReference Include="Verify.Xunit" Version="30.4.0" />
     <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>