Describe the bug
the file patern of save file doesn't contain any parameter. I just enter a fixed name in order to always save the screenshot with the same name.
When I take a second screenshot, the filename is incremented with a suffix "(2)" and so one !!!

To Reproduce
Steps to reproduce the behavior:

1. start ksnip
2. set up the auto save file and folder without any parameter as for instance c:/.../temp/image.jpg
3. take a screenshot. The file image.jpg is created
4. take a new screenshot. A new file is created image(2).jpg instead of rewriting file image.jpg

Expected behavior
As there is no specific pattern in the filename, the expected behavior is to rewrite the file for each screenshot taken

Reason : I have a word, powerpoint and outlook macro which inserts the image file in the document or email quite easily...

Desktop (please complete the following information):

• OS: W10 build 2009 (19042.985)
• Distribution in case of Linux [e.g. Ubuntu]
• Window System in case of Linux [e.g. X11]
• ksnip version 1.9.0
• How did you install ksnip [e.g. AppImage] : from zipfile "ksnip-1.9.0-windows.zip" downloaded from internet (of course)

Additional context
Add any other context about the problem here.