browser (meta): update deps + use new features + new deps: - update versions of existing dependencies; - use new import type option for `Swiper` as the old method was not working anymore with latest versions; - use new `css` feature for `Swiper` to have CSS injected by the generated module; - add `Tippy.js` and `emoji-picker-element` dependencies, they will be used for reactions and other future features.

You'll find install instructions in documentation (see doc/installation.rst).

If you need help, come the Libervia official XMPP room: xmpp:libervia@chat.jabberfr.org?join or join us with a web browser via https://chat.jabberfr.org/converse.js/libervia@chat.jabberfr.org