automation: Update docker-matrix_riotweb Docker tag to v1.11.72

botanikerrequested to merge

This MR contains the following updates:

Package	Update	Change
docker-matrix_riotweb	patch	`v1.11.71` -> `v1.11.72`

element-hq/element-web (docker-matrix_riotweb)

Polyfill Intl.Segmenter for wider web browser compatibility (#27803). Contributed by @dbkr.
Enable audio/webaudio Modernizr rule (#27772). Contributed by @t3chguy.
Add release announcement for the new room header (#12802). Contributed by @MidhunSureshR.
Default the room header to on (#12803). Contributed by @MidhunSureshR.
Update Thread Panel to match latest designs (#12797). Contributed by @t3chguy.
Close any open modals on logout (#12777). Contributed by @dbkr.
Iterate design of right panel empty state (#12796). Contributed by @t3chguy.
Update styling of UserInfo right panel card (#12788). Contributed by @t3chguy.
Accessibility: Add Landmark navigation (#12190). Contributed by @akirk.
Let Element Call widget receive m.room.create (#12710). Contributed by @AndrewFerr.
Let Element Call widget set session memberships (#12713). Contributed by @AndrewFerr.
Update right panel base card styling to match Compound (#12768). Contributed by @t3chguy.
Align widget_build_url_ignore_dm with call behaviour switch between 1:1 and Widget (#12760). Contributed by @t3chguy.
Move integrations switch (#12733). Contributed by @dbkr.
Element-R: Report events with withheld keys separately to Posthog. (#12755). Contributed by @richvdh.

Add a modernizr check for WebAssembly support (#27776). Contributed by @dbkr.
Test for lack of WebAssembly support (#12792). Contributed by @dbkr.
Fix stray 'account' heading (#12791). Contributed by @dbkr.
Add test for the unsupported browser screen (#12787). Contributed by @dbkr.
Fix HTML export test (#12778). Contributed by @dbkr.
Fix HTML export missing a bunch of Compound variables (#12774). Contributed by @t3chguy.
Fix inability to change accent colour consistently in custom theming (#12772). Contributed by @t3chguy.
Fix edge case of landing on 3pid email link with registration disabled (#12771). Contributed by @t3chguy.