apply the code suggestions from the review

Co-authored-by: John Paul E. Balandan, CPA <paulbalandan@gmail.com>

Author: michalsn

system/Images/Handlers/ImageMagickHandler.php

@@ -162,7 +162,7 @@ public function _resize(bool $maintainRatio = false)
     /**
      * Crops the image.
      *
-     * @return ImageMagickHandler
+     * @return $this
      *
      * @throws ImagickException
      */
@@ -276,7 +276,7 @@ protected function _flip(string $direction)
     /**
      * Get a driver version
      *
-     * @return mixed
+     * @return string
      */
     public function getVersion()
     {
@@ -286,7 +286,7 @@ public function getVersion()
             return $matches[1];
         }
 
-        return false;
+        return '';
     }
 
     /**

utils/phpstan-baseline/loader.neon

@@ -1,4 +1,4 @@
-# total 3316 errors
+# total 3314 errors
 includes:
     - argument.type.neon
     - assign.propertyType.neon

utils/phpstan-baseline/method.childReturnType.neon

@@ -1,4 +1,4 @@
-# total 38 errors
+# total 36 errors
 
 parameters:
     ignoreErrors:
@@ -137,21 +137,11 @@ parameters:
             count: 1
             path: ../../system/Images/Handlers/BaseHandler.php
 
-        -
-            message: '#^Return type \(CodeIgniter\\Images\\Handlers\\ImageMagickHandler\) of method CodeIgniter\\Images\\Handlers\\ImageMagickHandler\:\:_crop\(\) should be covariant with return type \(\$this\(CodeIgniter\\Images\\Handlers\\BaseHandler\)\) of method CodeIgniter\\Images\\Handlers\\BaseHandler\:\:_crop\(\)$#'
-            count: 1
-            path: ../../system/Images/Handlers/ImageMagickHandler.php
-
         -
             message: '#^Return type \(CodeIgniter\\Images\\Handlers\\ImageMagickHandler\) of method CodeIgniter\\Images\\Handlers\\ImageMagickHandler\:\:_resize\(\) should be covariant with return type \(\$this\(CodeIgniter\\Images\\Handlers\\BaseHandler\)\) of method CodeIgniter\\Images\\Handlers\\BaseHandler\:\:_resize\(\)$#'
             count: 1
             path: ../../system/Images/Handlers/ImageMagickHandler.php
 
-        -
-            message: '#^Return type \(mixed\) of method CodeIgniter\\Images\\Handlers\\ImageMagickHandler\:\:getVersion\(\) should be covariant with return type \(string\) of method CodeIgniter\\Images\\Handlers\\BaseHandler\:\:getVersion\(\)$#'
-            count: 1
-            path: ../../system/Images/Handlers/ImageMagickHandler.php
-
         -
             message: '#^Return type \(array\|bool\|float\|int\|object\|string\|null\) of method CodeIgniter\\Model\:\:__call\(\) should be covariant with return type \(\$this\(CodeIgniter\\BaseModel\)\|null\) of method CodeIgniter\\BaseModel\:\:__call\(\)$#'
             count: 1