AC-10573: Static deploy doesn't update files

Updated hash instead of md5

Author: sumesh-GL

lib/internal/Magento/Framework/App/View/Asset/Publisher.php

@@ -106,7 +106,7 @@ private function getFileHash($filePath)
             if ($content === false) {
                 self::$fileHashes[$filePath] = false;
             } else {
-                self::$fileHashes[$filePath] = md5($content);
+                self::$fileHashes[$filePath] = hash('sha256', $content);
             }
         }
         return self::$fileHashes[$filePath];
@@ -123,7 +123,7 @@ private function getTargetFileHash($dir, $targetPath)
     {
         try {
             $content = $dir->readFile($targetPath);
-            return md5($content);
+            return hash('sha256', $content);
         } catch (\Exception $e) {
             return false;
         }