Bump xunit.assert from 2.4.1 to 2.9.3 (#367)

Bumps [xunit.assert](https://github.com/xunit/xunit) from 2.4.1 to 2.9.3.
- [Commits](xunit/xunit@v2-2.4.1...v2-2.9.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/Doc/Doc.csproj

@@ -15,7 +15,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
-    <PackageReference Include="xunit" Version="2.4.2" />
+    <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>

tests/NRedisStack.Tests/NRedisStack.Tests.csproj

@@ -29,8 +29,8 @@
     <PackageReference Include="Validation" Version="2.6.68" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1" />
     <PackageReference Include="StackExchange.Redis" Version="2.8.24" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.assert" Version="2.4.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.assert" Version="2.9.3" />
     <PackageReference Include="BouncyCastle.Cryptography" Version="2.5.0" />
     <PackageReference Include="Microsoft.Azure.StackExchangeRedis" Version="3.1.0" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.5.23" />