Add support for Heroku-24

[edmorley]

Heroku-24 was released yesterday: https://devcenter.heroku.com/changelog-items/2898

Using this buildpack on Heroku-24 currently results in this error:

-----> Puppeteer app detected
-----> Detected Stack changes, flushing cache
-----> Updating apt caches
       Get:1 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB]
       Get:2 http://archive.ubuntu.com/ubuntu noble InRelease [256 kB]
       Get:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB]
       Get:4 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages [65.1 kB]
       Get:5 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB]
       Get:6 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages [206 kB]
       Get:7 http://archive.ubuntu.com/ubuntu noble/main amd64 Packages [1,808 kB]
       Get:8 http://archive.ubuntu.com/ubuntu noble/universe amd64 Packages [19.3 MB]
       Get:9 https://apt.postgresql.org/pub/repos/apt noble-pgdg InRelease [123 kB]
       Get:10 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages [97.3 kB]
       Get:11 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages [230 kB]
       Get:12 http://archive.ubuntu.com/ubuntu noble-backports/universe amd64 Packages [7,519 B]
       Get:13 https://apt.postgresql.org/pub/repos/apt noble-pgdg/main amd64 Packages [465 kB]
rm: cannot remove '/var/cache/apt/archives/partial/*.deb': Permission denied
       Fetched 23.0 MB in 2s (12.3 MB/s)
       Reading package lists...
-----> Fetching .debs for gconf-service
       Reading package lists...
       Building dependency tree...
E: Unable to locate package gconf-service