add Debian 12 and corresponding Raspberry Pi OS target

release 0.12.6.1-2

release 0.12.6-4 for AWS Lambda

release 0.12.6-3 for ArchLinux

release 0.12.6-2 for macOS

release 0.12.6-1

macOS fixes + add to Azure Pipelines

Needed to patch Qt's configure for propogating OBJECTIVE_CFLAGS,
plus explicitly choose libc++ with a 10.7 target, otherwise it
fails with newer Command Line Tools.

Also disable additional SQL plugins which caused build failures.

release 0.12.1.4-2

release 0.12.5-1