Updated steganography.py

[Ananyasingh2002]

I changed the code to make it work with different image types, not just JPEG. Now, the code checks what type of image you're using and saves it in the same format. This way, it won't give you errors if you use a different kind of image.

[Ananyasingh2002]

Please review the changes.

[kelvins]

Hi @Ananyasingh2002, thanks for the contrib, but why should we override the image format the user wants to save? In my opinion it would be better to raise an exception related to unsupported file formats than automatically changing the file format to something else.

Also, I tried it locally and it didn't seem to work. Here's a minimal example if you want to try:

from PIL import Image
image = Image.open("res/image1.jpg")
image.save("output1.png", format="JPEG")

This ☝️ is saving the image as PNG not JPEG (using Pillow 10.0.1)