Update version in example to 3.0.7

Author: manuquentin

example/package.json

@@ -11,7 +11,7 @@
     "react-dom": "^16.8.6",
     "react-native": "0.59.8",
     "react-native-background-timer": "^2.1.1",
-    "react-native-callkeep": "https://github.com/react-native-webrtc/react-native-callkeep#fix_outgoing_call_ios",
+    "react-native-callkeep": "3.0.7",
     "react-native-device-info": "^2.3.2",
     "react-native-gesture-handler": "~1.3.0",
     "react-native-reanimated": "~1.1.0",

example/yarn.lock

@@ -4132,9 +4132,10 @@ react-native-branch@~3.0.1:
   resolved "https://registry.yarnpkg.com/react-native-branch/-/react-native-branch-3.0.1.tgz#5b07b61cbd290168cd3c3662e017ebe0f356d2ca"
   integrity sha512-vbcYxPZlpF5f39GAEUF8kuGQqCNeD3E6zEdvtOq8oCGZunHXlWlKgAS6dgBKCvsHvXgHuMtpvs39VgOp8DaKig==
 
-"react-native-callkeep@https://github.com/react-native-webrtc/react-native-callkeep#fix_outgoing_call_ios":
-  version "3.0.1"
-  resolved "https://github.com/react-native-webrtc/react-native-callkeep#22a3f2d9f8ede5e83f88d9a16c3786efe249ce1f"
+[email protected]:
+  version "3.0.7"
+  resolved "https://registry.yarnpkg.com/react-native-callkeep/-/react-native-callkeep-3.0.7.tgz#3e9afbfaaf795e74d2b92750d14f144792278467"
+  integrity sha512-T0BiCmE2/egDCc4tlVjna5YpQ/4YdUH4uv8e3WlCcM80SpUyKLY6cPwbLXTXhBgF08l260oVUFSNfQX6snUQbg==
 
 react-native-device-info@^2.3.2:
   version "2.3.2"