Please update the Linux deb package

[CHJ85]

Hi there. The Linux DEB package is dated. One of its dependencies "libopenexr22" stopped distributing after Ubuntu 18.04 (Bionic). The current version is libopenexr25.

Deb packaging is a pain though, hence why developers use Flatpak or AppImage instead. I did update the DEB package for personal use, and the dependencies for Ubuntu 21.04 are as follows: libopenexr25, libharfbuzz0b, libhdf5-103-1, libwebp6, libilmbase25, libgstreamer1.0-0, libavcodec-extra58, libavformat58, libswscale5, libgtk-3-0, libtesseract4, libgtk2.0-0, libdc1394-25, libopenal1