chore(docker): update docker digests

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
owncloud/ubuntu	final	digest	8de4fb4 -> 41bbad8
owncloud/ubuntu	final	digest	afdaf6d -> ef1333d
owncloud/ubuntu	final	digest	2dafab2 -> 61519d3

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