Invalid configuration object for snap since v22.13.0

[mcmxcdev]

• Electron-Builder Version: 22.13.0

• Node Version: 14.17.2

• Electron Version: 13.2.1
• Electron Type (current, beta, nightly): current

• Target: https://github.com/getferdi/ferdi/blob/develop/electron-builder.yml

There were no changes to our electron-builder configuration (we published nightly releases successfully every day), but with v22.13.0 it stopped working due to invalid configuration object. v22.12.1 still works fine.

You can see the details of the failing CI pipeline here: https://github.com/getferdi/ferdi/runs/3428103428?check_suite_focus=true#step:17:65

[mmaietta]

Many thanks for the CI logs and sample configuration! Without the CI logs, I would have never figured out how you were configuring snapStore in the config via CLI (-c.snap)
Opened PR #6193