Merge pull request #1321 from gtg-bantonio/patch-1

Adjust PHPDoc type for causer and subject

Author: patinthehat

src/Models/Activity.php

@@ -24,9 +24,9 @@
  * @property \Illuminate\Support\Collection|null $properties
  * @property \Carbon\Carbon|null $created_at
  * @property \Carbon\Carbon|null $updated_at
- * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent $causer
+ * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent|null $causer
  * @property-read \Illuminate\Support\Collection $changes
- * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent $subject
+ * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent|null $subject
  *
  * @method static \Illuminate\Database\Eloquent\Builder|\Spatie\Activitylog\Models\Activity causedBy(\Illuminate\Database\Eloquent\Model $causer)
  * @method static \Illuminate\Database\Eloquent\Builder|\Spatie\Activitylog\Models\Activity forBatch(string $batchUuid)