test(vscode): testing suite gets stuck intermittently

[alestiago]

Description

Sometimes, when running the VS Code's extension tests the execution might never terminate. This can be seen in this action run, in other occasions the testing suite coverage report is completely bogus. These behaviours are not always seen, but occasionally show up.

Requirements

• [ ] Avoid testing suite getting stuck intermittently
• [ ] Avoid testing suite reporting bogus coverage report