Bump xunit.analyzers from 1.11.0 to 1.15.0

Bumps [xunit.analyzers](https://github.com/xunit/xunit.analyzers) from 1.11.0 to 1.15.0.
- [Commits](xunit/xunit.analyzers@1.11.0...1.15.0)

---
updated-dependencies:
- dependency-name: xunit.analyzers
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

test/UnitTests/UnitTests.csproj

@@ -21,7 +21,7 @@
         <PackageReference Include="MSTest.TestAdapter" Version="3.2.2" />
         <PackageReference Include="MSTest.TestFramework" Version="3.2.2" />
         <PackageReference Include="xunit" Version="2.7.0" />
-        <PackageReference Include="xunit.analyzers" Version="1.11.0" />
+        <PackageReference Include="xunit.analyzers" Version="1.15.0" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.5.7">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>