Avoid vulnerable System.Text.Json 8.0.0-8.0.4

[dmytro-pryvedeniuk]

This PR helps to avoid JasperFx bringing vulnerable System.Text.Json 8.0.0. E.g. currently in Alba you can see

  [WRN] Restore: /home/runner/work/alba/alba/src/IdentityServer.New/IdentityServer.New.csproj : warning NU1903: Package 'System.Text.Json' 8.0.4 has a known high severity vulnerability, https://github.com/advisories/GHSA-8g4q-xg66-9fp4 [/home/runner/work/alba/alba/src/Alba.sln]
  [WRN] Restore: /home/runner/work/alba/alba/src/WebApiNet6/WebApiNet6.csproj : warning NU1903: Package 'System.Text.Json' 8.0.0 has a known high severity vulnerability, https://github.com/advisories/GHSA-8g4q-xg66-9fp4 [/home/runner/work/alba/alba/src/Alba.sln]

Dependency graph is the following

JasperFx for .net8
	Microsoft.Extensions.Hosting 8.0.0
		Microsoft.Extensions.DependencyInjection.Abstractions (>= 8.0.0)
		Microsoft.Extensions.Configuration.Json (>= 8.0.0)
			System.Text.Json (>= 8.0.0)
                

With this PR

JasperFx for .net8
	Microsoft.Extensions.Hosting 8.0.1
		Microsoft.Extensions.DependencyInjection.Abstractions (>= 8.0.2)
		Microsoft.Extensions.Configuration.Json (>= 8.0.1)
			~ no dependency on System.Text.Json

Microsoft.Extensions.Logging.Abstractions is updated to 8.0.2. Also, xunit.runner.visualstudio is updated to 3.0.0 to fix the warning

 warning NU1603: EventTests depends on xunit.runner.visualstudio (>= 2.9.2) but xunit.runner.visualstudio 2.9.2 was not found. xunit.runner.visualstudio 3.0.0 was resolved instead.