Fix an error from an automated refactor

It will always be 1 as it is 1 object, we neede the array from this

tests/Facades/HealthCheckTest.php

@@ -13,6 +13,6 @@ public function testCanUseAppHealthFromFacade(): void
         $this->app->register(HealthCheckServiceProvider::class);
 
         config(['healthcheck.checks' => [\UKFast\HealthCheck\Checks\EnvHealthCheck::class]]);
-        $this->assertCount(1, HealthCheck::all());
+        $this->assertCount(1, HealthCheck::all()->toArray());
     }
 }