update avatar and originalAvatar display size check (#671)

* update avatar and originalAvatar display size check

The linkedIn response replaced/removed the array key `storageSize` with `displaySize`, this change will check for both.

It currently throws an exception:

```
ErrorException GET /auth/linkedin
Undefined array key "storageSize"
```

* fix: indentation

* fix: indentation - 2nd try

src/Two/LinkedInProvider.php

@@ -102,10 +102,16 @@ protected function mapUserToObject(array $user)
 
         $images = (array) Arr::get($user, 'profilePicture.displayImage~.elements', []);
         $avatar = Arr::first($images, function ($image) {
-            return $image['data']['com.linkedin.digitalmedia.mediaartifact.StillImage']['storageSize']['width'] === 100;
+            return (
+                $image['data']['com.linkedin.digitalmedia.mediaartifact.StillImage']['storageSize']['width'] ??
+                $image['data']['com.linkedin.digitalmedia.mediaartifact.StillImage']['displaySize']['width']
+            ) === 100;
         });
         $originalAvatar = Arr::first($images, function ($image) {
-            return $image['data']['com.linkedin.digitalmedia.mediaartifact.StillImage']['storageSize']['width'] === 800;
+            return (
+                $image['data']['com.linkedin.digitalmedia.mediaartifact.StillImage']['storageSize']['width'] ??
+                $image['data']['com.linkedin.digitalmedia.mediaartifact.StillImage']['displaySize']['width']
+            ) === 800;
         });
 
         return (new User)->setRaw($user)->map([