Upgrade PHP 8.3 image base to debian:bookworm

Bookworm is latest Debian stable

very probably libaom3 dependency could be removed as

• https://packages.debian.org/bookworm/libavif-dev (depends on libavif15)
• https://packages.debian.org/bookworm/libavif15 (depends on libaom3 and librav1e0)

added 1 commit

• 1fb56f0c - Upgrade PHP 8.3 image base to debian:bookworm

Compare with previous version

After building image, it should be checked docker run --rm <image> php -r 'var_dump(imageavif(imagecreatetruecolor(8, 8), "/tmp/test"));'

with result bool(true)

and sqlite is

$ php --ri pdo_sqlite

pdo_sqlite

PDO Driver for SQLite 3.x => enabled
SQLite Library => 3.40.1

changed target branch from production to dev

Going to merge and build this against our 'dev' image, so we can test.

merged