bump(main/tmux): 3.4

[TomJo2000]

Also enable building with --enable-sixel in anticipation of future Sixel support in the main app.

I'd much appreciate testing on this PR before merging.
Instructions below.

_{(This is a pre-written, saved reply.)}
To test this PR please download the appropriate DEB package(s)
from the build artifacts of the associated PR's latest CI run.

After downloading the build artifact, make sure to unzip and un-tar it.

Detailed instuctions, if needed.

# finding out what architecture you need
# architecture is just below the TERMUX_VERSION
termux-info

# e.g.
# [...]
# TERMUX_MAIN_PACKAGE_FORMAT=debian
# TERMUX_VERSION=0.118.0
# TERMUX__USER_ID=0
# Packages CPU architecture:
# aarch64
# [...]

# =======================

# make sure `unzip` and `tar` are installed using
pkg install unzip tar

# unzip the artifact (if you have a different architecture this might be arm, i686 or x86_64 instead)
unzip debs-aarch64-*.zip

# untar the artifact
tar xf debs-aarch64-*.tar

# You should now have a debs/ directory in your current working directory
# Install the packages from the local source using
pkg install -- ./debs/*.deb

# to clean up, you can remove the debs/ directory, .tar file and .zip file
rm -rfi debs debs-aarch64-*.zip debs-aarch64-*.tar

[Biswa96]

Also enable building with --enable-sixel in anticipation of future Sixel support in the main app.

Yeah, sixel does not work in termux-app. I have tried this new tmux after ssh-ing into termux from Linux desktop. Sixel in tmux works that way. In previous version of tmux, it did not work.

[TomJo2000]

Yeah, sixel does not work in termux-app. I have tried this new tmux after ssh-ing into termux from Linux desktop. Sixel in tmux works that way. In previous version of tmux, it did not work.

Enabled it in anticipation of:

• Add graphics in terminal support: - Sixel and iTerm2 protocols termux-app#2973

Remote access is of course another method.

[ErrrorMaxx]

It works, thanks!