chore(deps): update dependency etherpad to v2.2.2-0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
etherpad	role	minor	v2.1.1-0 -> v2.2.2-0

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Release Notes

etke.cc/roles/etherpad (etherpad)

### [`v2.2.2-0`](https://gitlab.com/etke.cc/roles/etherpad/compare/v2.1.1-0...v2.2.2-0) [Compare Source](https://gitlab.com/etke.cc/roles/etherpad/compare/v2.1.1-0...v2.2.2-0)

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