chore(deps): update etherpad/etherpad docker tag to v2.2.7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
etherpad/etherpad	final	minor	2.1.1 -> 2.2.7

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Release Notes

ether/etherpad-lite (etherpad/etherpad)

v2.2.7

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Notable enhancements and fixes

• We migrated all important pages to React 19 and React Router v7

Besides that only dependency updates.

-> Have a merry Christmas and a happy new year. 🎄 🎁

v2.2.6

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Notable enhancements and fixes

• Added option to delete a pad by the creator. This option can be found in the settings menu. When you click on it you get a confirm dialog and after that you have the chance to completely erase the pad.

v2.2.5

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Notable enhancements and fixes

• Fixed timeslider not scrolling when the revision count is a multiple of 100
• Added new Restful API for version 2 of Etherpad. It is available at /api-docs

v2.2.4

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Notable enhancements and fixes

• Switched to new SQLite backend
• Fixed rusty-store-kv module not found

v2.2.3

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Notable enhancements and fixes

• Introduced a new in process database rustydb that represents a fast key value store written in Rust.
• Readded window._ as a shortcut for getting text
• Added support for migrating any ueberdb database to another. You can now switch as you please. See here: https://docs.etherpad.org/cli.html
• Further Typescript movements
• A lot of security issues fixed and reviewed in this release. Please update.

v2.2.2

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Notable enhancements and fixes

• Removal of Etherpad require kernel: We finally managed to include esbuild to bundle our frontend code together. So no matter how many plugins your server has it is always one JavaScript file. This boosts performance dramatically.
• Added log layoutType: This lets you print the log in either colored or basic (black and white text)
• Introduced esbuild for bundling CSS files
• Cache all files to be bundled in memory for faster load speed

v2.2.1

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v2.2.0

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