Update dockerfile to trixie

[sjrct]

My motivation for this is was that the version of musicbrainzngs provided by the package in debian:buster was less that 0.7, causing this warning to appear:

WARNING:whipper.command.main:Parameter 'use_https' is missing in versions of musicbrainzngs < 0.7. This means whipper will only be able to communicate with the configured MusicBrainz server ('musicbrainz.org') over plain HTTP. If a custom server which speaks HTTPS only has been declared, a suitable version of the musicbrainzngs module will be needed to make it work in whipper.

The version in trixie (current stable) is 0.7.1 (most recent version) so this issue no longer occurs. buster also reached end of life in 2022, so prob best to update.

[MerlijnWajer]

Thanks. How does this compare to #668 - did you test this and confirm rips to be working?

[sjrct]

Thanks. How does this compare to #668 - did you test this and confirm rips to be working?

@MerlijnWajer Oh, well, I suppose I should have checked if a PR for this already existed! 😅

That looks better than my PR, so I'll close this. I was able to rip with this PR, but I was also able to fix the two issues I encountered with that PR (see #689).