Upgrade to Ubuntu 24.04

[cdauth]

The current Docker image is based on Ubuntu 22.04, which includes the outdated osm2pgsql 1.6.0.

While following the osm2pgsql guide to write the Lua script for my map, I noticed that quite few things mentioned there did not work. For example, it said that I should use :insert() instead of the deprecated :add_row(), but that didn't work with the old osm2pgsql version in the docker image.

I think it would be nice to upgrade to Ubuntu 24.04, which includes the latest osm2pgsql 1.11.0.