Update vectorim/element-web Docker tag to v1.11.91

[small-hack-renovate]

This PR contains the following updates:

Package	Update	Change
vectorim/element-web	patch	v1.11.90 -> v1.11.91

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Release Notes

element-hq/element-web (vectorim/element-web)

v1.11.91

Compare Source

✨ Features

• Implement changes to memberlist from feedback (#​29029). Contributed by @​MidhunSureshR.
• Add toast for recovery keys being out of sync (#​28946). Contributed by @​dbkr.
• Refactor LegacyCallHandler event emitter to use TypedEventEmitter (#​29008). Contributed by @​t3chguy.
• Add Recovery section in the new user settings Encryption tab (#​28673). Contributed by @​florianduros.
• Retry loading chunks to make the app more resilient (#​29001). Contributed by @​t3chguy.
• Clear account idb table on logout (#​28996). Contributed by @​t3chguy.
• Implement new memberlist design with MVVM architecture (#​28874). Contributed by @​MidhunSureshR.

🐛 Bug Fixes

• [Backport staging] Switch to secure random strings (#​29035). Contributed by @​RiotRobot.
• React to MatrixEvent sender/target being updated for rendering state events (#​28947). Contributed by @​t3chguy.

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