Update ActivityLogger.php (spatie#997)

adds `Conditionable` trait

Author: usernotnull

src/ActivityLogger.php

@@ -9,12 +9,13 @@
 use Illuminate\Support\Arr;
 use Illuminate\Support\Carbon;
 use Illuminate\Support\Str;
+use Illuminate\Support\Traits\Conditionable;
 use Illuminate\Support\Traits\Macroable;
 use Spatie\Activitylog\Contracts\Activity as ActivityContract;
 
 class ActivityLogger
 {
-    use Macroable;
+    use Conditionable, Macroable;
 
     protected ?string $defaultLogName = null;