downgrading the cache package to a version that is test with net6.0

Author: Sophia Tevosyan

Directory.Packages.props

@@ -9,7 +9,7 @@
 
   <!-- Microsoft.Extensions.* Packages -->
   <ItemGroup>
-    <PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="9.0.7" />
+    <PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="8.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="6.0.2" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />