Update jitsi-web version

Changelog here https://github.com/jitsi/jitsi-meet/releases/tag/stable%2Fjitsi-meet_4857

roles/matrix-jitsi/defaults/main.yml

@@ -49,7 +49,7 @@ matrix_jitsi_jibri_xmpp_password: ''
 matrix_jitsi_jibri_recorder_user: recorder
 matrix_jitsi_jibri_recorder_password: ''
 
-matrix_jitsi_container_image_tag: "stable-4627-1"
+matrix_jitsi_container_image_tag: "stable-4857"
 
 matrix_jitsi_web_docker_image: "jitsi/web:{{ matrix_jitsi_container_image_tag }}"
 matrix_jitsi_web_docker_image_force_pull: "{{ matrix_jitsi_web_docker_image.endswith(':latest') }}"