deps: react-native-webrtc@latest

Fixes a crash on iOS when disposing streams.

package-lock.json

       "integrity": "sha512-l3Quzbb+qa4in2U5RSt/lT0/pHrIpEChT1NnqrVAAXNrjkXjVOsxduaaEDdDhTzNJQEm/PcAcoyrFmgvGOohxw=="
     },
     "react-native-webrtc": {
-      "version": "github:jitsi/react-native-webrtc#047b019a7ce1ec93ab4a2f6796e997d7a02e8e5d",
-      "from": "github:jitsi/react-native-webrtc#047b019a7ce1ec93ab4a2f6796e997d7a02e8e5d",
+      "version": "github:react-native-webrtc/react-native-webrtc#a12a6cdfdefe53d03b388394e4cf10966bd99fca",
+      "from": "github:react-native-webrtc/react-native-webrtc#a12a6cdfdefe53d03b388394e4cf10966bd99fca",
       "requires": {
         "base64-js": "^1.1.2",
         "event-target-shim": "^1.0.5",

package.json

     "react-native-svg-transformer": "0.13.0",
     "react-native-swipeout": "2.3.6",
     "react-native-watch-connectivity": "0.2.0",
-    "react-native-webrtc": "github:jitsi/react-native-webrtc#047b019a7ce1ec93ab4a2f6796e997d7a02e8e5d",
+    "react-native-webrtc": "github:react-native-webrtc/react-native-webrtc#a12a6cdfdefe53d03b388394e4cf10966bd99fca",
     "react-native-webview": "7.4.1",
     "react-redux": "7.1.0",
     "react-textarea-autosize": "7.1.0",