fix(Image): Convert calculated dimensions to integer type (#58)

Author: k99k5

src/Utils/Image.php

@@ -160,9 +160,9 @@ public function thumbnail(int $width, int $height, int|Resample $resample = 2):
         }
 
         if ($inputHeight > $inputWidth) {
-            $width = floor($inputWidth * $height / $inputHeight);
+	        $width = (int)floor($inputWidth * $height / $inputHeight);
         } elseif ($inputWidth > $inputHeight) {
-            $height = floor($inputHeight * $width / $inputWidth);
+	        $height = (int)floor($inputHeight * $width / $inputWidth);
         }
 
         $this->resize($width, $height, $resample);
@@ -499,4 +499,4 @@ public function drawText(string $text, int $xPos, int $yPos, string $fontFile, i
 
         $this->image->draw()->text($text, $font, $position);
     }
-}
+}