Upgrades react-native-callstats to latest version 3.50.4.

package-lock.json

     "bluebird": {
       "version": "3.5.1",
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
-      "integrity": "sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA=="
+      "integrity": "sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA==",
+      "dev": true
     },
     "bn.js": {
       "version": "4.11.8",
       "integrity": "sha512-ARhBOdzS3e41FbkW/XWrTEtukqqLoK5+Z/4UeDaLuSW+39JPeFgs4gCGqsrJHVZX0fUrx//4OF0K1CUGwlIFow==",
       "dev": true
     },
-    "precalltest": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/precalltest/-/precalltest-1.1.5.tgz",
-      "integrity": "sha1-9KbDL3DCZmuAj+StCuVHFp9oFQo=",
-      "requires": {
-        "bluebird": "^3.5.0"
-      }
-    },
     "precommit-hook": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/precommit-hook/-/precommit-hook-3.0.0.tgz",
       }
     },
     "react-native-callstats": {
-      "version": "3.27.0",
-      "resolved": "https://registry.npmjs.org/react-native-callstats/-/react-native-callstats-3.27.0.tgz",
-      "integrity": "sha1-xPyL0wTkCQKdnHzbcj/lQN3Bjuk=",
+      "version": "3.50.4",
+      "resolved": "https://registry.npmjs.org/react-native-callstats/-/react-native-callstats-3.50.4.tgz",
+      "integrity": "sha512-VPVWVMoabgKYSuK3kQurHyfwviX22CyjLqIhWcPRettIt/tdvzszfMLWdw49VB/vXslgg4rqQdKlSNK1AjLx0Q==",
       "requires": {
         "base-64": "0.1.0",
-        "jssha": "^2.2.0",
-        "precalltest": "^1.0.0"
+        "jssha": "^2.2.0"
       }
     },
     "read-pkg": {

package.json

     "current-executing-script": "0.1.3",
     "jitsi-meet-logger": "github:jitsi/jitsi-meet-logger#6fff754a77a56ab52499f3559105a15886942a1e",
     "js-utils": "github:jitsi/js-utils#d4b78721b754a15c2588b7b0c621a9fff6fa1363",
-    "react-native-callstats": "3.27.0",
+    "react-native-callstats": "3.50.4",
     "sdp-transform": "2.3.0",
     "strophe.js": "1.2.15",
     "strophejs-plugin-disco": "0.0.2",