* extends user and group structure by introducing fields for issued and integration references
* Add integration checks to group management to prevent groups added by integration.
* Add integration checks to user management to prevent deleting user added by integration.
* Fix broken user update tests
* Initialize all user fields for testing
* Change a serializer option to embedded for IntegrationReference in user and group models
* Add issued field to user api response
* Add IntegrationReference to Group in update groups handler
* Set the default issued field for users in file store
This PR showcases the implementation of additional linter rules. I've updated the golangci-lint GitHub Actions to the latest available version. This update makes sure that the tool works the same way locally - assuming being updated regularly - and with the GitHub Actions.
I've also taken care of keeping all the GitHub Actions up to date, which helps our code stay current. But there's one part, goreleaser that's a bit tricky to test on our computers. So, it's important to take a close look at that.
To make it easier to understand what I've done, I've made separate changes for each thing that the new linters found. This should help the people reviewing the changes see what's going on more clearly. Some of the changes might not be obvious at first glance.
Things to consider for the future
CI runs on Ubuntu so the static analysis only happens for Linux. Consider running it for the rest: Darwin, Windows
* Check links of groups before delete it
* Add delete group handler test
* Rename dns error msg
* Add delete group test
* Remove rule check
The policy cover this scenario
* Fix test
* Check disabled management grps
* Change error message
* Add new activity for group delete event
