update CI

[meejah]

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[meejah]

Fun! That looks like a real (and very weird) bug on only-master: one of the 20 folders gets a differently-sized metadata Immutable.

E       testtools.matchers._impl.MismatchError: Differences: [
E       len({(416, 292), (416, 190)}) != 1: after <function <lambda>> on [[416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 190], [416, 800, 292]]
E       ]