Yes, everything else is up to date.
$ sudo pacman -Syu mkvtoolnix-cli
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
:: Starting full system upgrade...
resolving dependencies...
warning: cannot resolve "libfmt.so=8-64", a dependency of "mkvtoolnix-cli"
:: The following package cannot be upgraded due to unresolvable dependencies:
mkvtoolnix-cli
:: Do you want to skip the above package for this upgrade? [y/N] n
error: failed to prepare transaction (could not satisfy dependencies)
:: unable to satisfy dependency 'libfmt.so=8-64' required by mkvtoolnix-cli
I can live without it, as I also have a StarLite Linux laptop, but I always try to use my Pinebook Pro as my main computer.
Moderator edit: In the future, please use proper formatting: [HowTo] Post command output and file content as formatted text