Include latest malcontent in the toolbox

Ignacy Kuchcińskirequested to merge
ignapk/gnome-shell:toolbox-latest-malcontent into main

Currently the toolbox lacks malcontent >= 0.14.0, because that version has not been released yet. However, we need it to test the upcoming parental controls integration, so build it in the toolbox.

Related: !3841 (merged)

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