Wraps file extension comparison components in strtolower()

This avoids the issue where replacing file.PNG with newfile.png fails due to "PNG" not being equal to "png"

Author: DanielGordonIT

app/Uploads/ImageRepo.php

@@ -166,7 +166,7 @@ public function updateImageDetails(Image $image, $updateDetails): Image
      */
     public function updateImageFile(Image $image, UploadedFile $file): void
     {
-        if ($file->getClientOriginalExtension() !== pathinfo($image->path, PATHINFO_EXTENSION)) {
+        if (strtolower($file->getClientOriginalExtension()) !== strtolower(pathinfo($image->path, PATHINFO_EXTENSION))) {
             throw new ImageUploadException(trans('errors.image_upload_replace_type'));
         }