chore(docker): update docker digests

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
owncloud/ubuntu	final	digest	0b46813 -> cecb565
owncloud/ubuntu	final	digest	75904e2 -> 11a8a60
owncloud/ubuntu	final	digest	bd5a5c3 -> f7bb80f

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