Update dependency ONLYOFFICE/onlyoffice-nextcloud to v7.6.6

This MR contains the following updates:

Package	Update	Change
ONLYOFFICE/onlyoffice-nextcloud	minor	v7.5.4 -> v7.6.6

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Release Notes

ONLYOFFICE/onlyoffice-nextcloud

v7.6.6

Compare Source

Added

• Dutch translation
• Chinese (Traditional, Taiwan), Basque (Spain) empty file templates

Changed

• compatible with Nextcloud 25
• generate preview by default
• fix editing with federated share
• fix opening file in new tab
• fix watermark for shared file by link
• fix update application
• Nextcloud v24 is no longer supported

v7.5.6

Compare Source

Added

• Dutch translation
• Chinese (Traditional, Taiwan), Basque (Spain) empty file templates

Changed

• generate preview by default
• fix editing with federated share
• fix opening file in new tab
• fix watermark for shared file by link
• fix update application

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