Merge branch 'phpstan-fix' into 'master'

Phpstan fix

See merge request head.trackingsoft/micro-kernel!4

Author: Asisyas

src/Configuration/ApplicationConfigurationInterface.php

@@ -5,9 +5,10 @@
 interface ApplicationConfigurationInterface
 {
     /**
-     * @param  string $key
-     * @param  mixed $default
+     * @param string $key
+     * @param mixed|null $default
+     * @param bool $nullable
      * @return mixed
      */
-    public function get(string $key, mixed $default = null): mixed;
+    public function get(string $key, mixed $default = null, bool $nullable = true): mixed;
 }