Bump Microsoft.AspNetCore.TestHost from 8.0.20 to 8.0.22

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.TestHost
  dependency-version: 8.0.22
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

tests/Foundatio.Tests/Foundatio.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <ItemGroup>
     <PackageReference Include="Exceptionless.RandomData" Version="1.2.2" />
-    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="8.0.20" />
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="8.0.22" />
     <PackageReference Include="Polly" Version="8.6.4" />
     <PackageReference Include="Moq" Version="4.20.72" />
   </ItemGroup>