it truncates the file on the last QR code

[djoproject]

Describe the bug
I've tried to generate several pdf (from gpg or ssh armored files), the end of the input file was always truncated,

To Reproduce
Steps to reproduce the behavior:

1. Start papyrus
2. Select a text file, even it is going to generate a single QR code
3. read the QR code from a phone
4. the last part of the file is not present in the last qrcode

Expected behavior
I expected to see the end of the file in the last QR code

Desktop (please complete the following information):

• OS: Linux Mint 22.2
• papyrus: papyrus-1.1.2+4-linux.deb