Bump the tests group with 3 updates

Bumps Microsoft.NET.Test.Sdk from 17.9.0 to 17.14.1
Bumps xunit from 2.8.0 to 2.9.3
Bumps xunit.runner.visualstudio from 2.8.0 to 3.1.4

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 17.14.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: tests
- dependency-name: xunit
  dependency-version: 2.9.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: tests
- dependency-name: xunit.runner.visualstudio
  dependency-version: 3.1.4
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: tests
...

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

Author: dependabot[bot]

src/Tests/Tests.csproj

@@ -7,9 +7,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="xunit" Version="2.8.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
   </ItemGroup>
 
   <ItemGroup>