Update to dotnet 8 preview 5 (#14492)

* Update to .net 8 preview 1

* Update npoco to 5.7.0

* Update pipeline to use .net 8

* Revert "Update npoco to 5.7.0"

This reverts commit f7795afa77a41ef2719f639405f73d9c21e4b12e.

* Fix tests and updated OpenApi.json

* use dotnet 8 in linux container

* Updated templates and docker image to dotnet 8

* Bugfix

* R
Updated docker images to 8.0 preview 1

* linux docker images updated

* Force use c# 11, in hope of the acceptance tests will pass

* Do not use C# 8 :)

* Update to preview 2

* CompatibilitySuppressions

* updated templates

* Disable package validation

* Update to .net8 preview 4

* change EnableStrictModeForCompatibleFrameworksInPackage to false

* Package validation

* Added CompatibilitySuppressions.xml

* Fix up IP networks

* Updated to preview 5

* Update docker images

* Post merge fixes

* Try to update dotnet version of codeql

* Delete empty suppression files

* Remove dependency

* Cleanup

---------

Co-authored-by: Elitsa <elm@umbraco.dk>

src/Umbraco.Cms.Persistence.EFCore.SqlServer/Umbraco.Cms.Persistence.EFCore.SqlServer.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.7" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0-preview.5.*" />
   </ItemGroup>
 
   <ItemGroup>