[Full Changelog](https://github.com/vector-im/riot-web/compare/v1.5.10...v1.5.11-rc.1)
* Upgrade to JS SDK 5.1.0-rc.1 and React SDK 2.2.0-rc.1
* Change Windows signing to warning when missing token
[\#12523](https://github.com/vector-im/riot-web/pull/12523)
* Modernizr remove t3st/es6/contains
[\#12524](https://github.com/vector-im/riot-web/pull/12524)
* Switch out any eval-using Modernizr rules
[\#12519](https://github.com/vector-im/riot-web/pull/12519)
* Update from Weblate
[\#12522](https://github.com/vector-im/riot-web/pull/12522)
* Notify electron of language changes
[\#12487](https://github.com/vector-im/riot-web/pull/12487)
* Relax macOS notarisation check to print a warning
[\#12503](https://github.com/vector-im/riot-web/pull/12503)
* Clarify supported tier means desktop OSes
[\#12486](https://github.com/vector-im/riot-web/pull/12486)
* Use noreferrer in addition to noopener for edge case browsers
[\#12477](https://github.com/vector-im/riot-web/pull/12477)
* Document start / end composer shortcuts
[\#12466](https://github.com/vector-im/riot-web/pull/12466)
* Update from Weblate
[\#12480](https://github.com/vector-im/riot-web/pull/12480)
* Remove buildkite pipeline
[\#12464](https://github.com/vector-im/riot-web/pull/12464)
* Remove exec so release script continues
[\#12435](https://github.com/vector-im/riot-web/pull/12435)
* Use Persistent Storage where possible
[\#12425](https://github.com/vector-im/riot-web/pull/12425)
This tag has no release notes.