chore(deps): Bump @nextcloud/vue from 8.6.2 to 8.7.0

[Antreesy]

• Fix Left sidebar padding issue on main #11601
• Fix Link to message of same conversation could directly scroll to it, currently it opens new tab #10565
• Fix Link to another chat in a chat message should not be external link but should switch to the chat #8855

🖌️ UI Checklist

🖼️ Screenshots / Screencasts

🏚️ Before	🏡 After

🚧 Tasks

• NcRichContenteditable tribute is broken - to be fixed in 8.7.1 fix(NcRichContenteditable): register props globally for new Tribute nextcloud-libraries/nextcloud-vue#5268

🏁 Checklist

• 🌏 Tested with Chrome, Firefox and Safari or should not be risky to browser differences
• 🖌️ Design was reviewed, approved or inspired by the design team
• ⛑️ Tests are included or not possible
• 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required

[nickvergessen]

NcRichContenteditable tribute is broken - to be fixed in 8.7.1

Means we can not update?
Any ticket link?

[Antreesy]

Any ticket link?

Was introduced in 8.6.2, which is already merged in main + stable28

Fix is there: nextcloud-libraries/nextcloud-vue#5268

[Antreesy]

/backport ba55ed5 to stable28