deps: bump container tag for nextcloud

[github-actions]

deps: bump container nextcloud tag

Update nextcloud /manifest.yaml

change detected: * key "$.version" updated from "30.0.1" to "30.0.2", in file "nextcloud/manifest.yaml"

Update nextcloud/app.yaml

1 file(s) updated with "image: nextcloud:30.0.2": * nextcloud/app.yaml

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