Update a4-meinberlin commit hash to 61d78ff

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
a4-meinberlin	dependencies	digest	61d78ff	source

:abcd: If you wish to disable git hash updates, add ":disableDigestUpdates" to the extends array in your config.

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Renovate configuration

:date: Schedule: PR created on schedule "on tuesday" (UTC)

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

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