Fix tests coverage regression bug in .NET 7.0.100

The coverlet msbuild doesn't work and thus the tests coverage report is not generated.
It is a temporarily bug cause in .NET 7.0.100 version and will be fixed in .NET 7.0.101.

For more info follow the issues:
- [coverlet.msbuild not working on .net 7](coverlet-coverage/coverlet#1391)
- [dotnet test does not forward MSBuild properties to msbuild in .NET 7 RC1]microsoft/vstest#4014

SocialEventManager/docker-compose.yml

@@ -99,6 +99,8 @@ services:
       - Email__UserName=${EMAIL__USERNAME}
       - Email__Password=${EMAIL__PASSWORD}
       - Email__Host=${EMAIL__HOST}
+      - CollectCoverage=true
+      - CoverletOutputFormat=lcov
     volumes:
       - .:/home/runner/work/social-event-manager/social-event-manager/SocialEventManager
       - .:/tests