We do not have any coverage for nupac upgrade, so we approved a PR with typo that bricked the command, ref: 3eefc07

We need to add upgrade cases to our tests set, false positives are the worst

I suggest such cases:

• upgrade correctly (outdated package gets upgraded): Upgraded correctly
• upgrade package from IGNOREPKG (package not up to date but ignored): No packages to upgrade
• upgrade nothing (only up to date packages are installed): No packages to upgrade
• upgrade wrong package (wrong name): No packages to upgrade