Bump bookwyrm, jitsi, librebooking, decidim

- bookwyrm: 0.8.6 -> 0.9.3 (deployment + worker)
- jitsi: all components to stable-11248-2 (web, jicofo, jvb, prosody)
- librebooking: 5.1.0 -> 7.1.0
- decidim: 0.31.0 -> 0.31.6 (patch bump, custom image)

jitsi/versions/stable/deployment-jicofo.yaml

@@ -22,7 +22,7 @@ spec:
           type: RuntimeDefault
       containers:
         - name: jitsi-jicofo
-          image: jitsi/jicofo:jicofo-1.0-1184-1
+          image: jitsi/jicofo:stable-11248-2
           env:
             - name: XMPP_DOMAIN
               value: "{{ .xmppDomain }}"