Updates lib-jitsi-meet to 3077772. (#2845)

Fixes custom callstats script param name.

package-lock.json

       }
     },
     "lib-jitsi-meet": {
-      "version": "github:jitsi/lib-jitsi-meet#39eea17e7e2f8ff4cc273239a6e73f2a149b96e2",
+      "version": "github:jitsi/lib-jitsi-meet#307777207ec219df344b8fed2fd2071d2238f9f8",
       "requires": {
         "async": "0.9.0",
         "current-executing-script": "0.1.3",

package.json

     "jquery-i18next": "1.2.0",
     "js-md5": "0.6.1",
     "jwt-decode": "2.2.0",
-    "lib-jitsi-meet": "github:jitsi/lib-jitsi-meet#39eea17e7e2f8ff4cc273239a6e73f2a149b96e2",
+    "lib-jitsi-meet": "github:jitsi/lib-jitsi-meet#307777207ec219df344b8fed2fd2071d2238f9f8",
     "lodash": "4.17.4",
     "moment": "2.19.4",
     "postis": "2.2.0",