Final improvements for reduced scanning (#11809)

Exclude psl

Explicitly disable JIT by default (#11745)

Merge branch '6.x'

Fix

Merge pull request #11676 from vimeo/psalm_pure_on_classes

Allow @psalm-pure on classes

Test

Merge pull request #11667 from Jean85/patch-2

Allow sebastian/diff 8

Merge pull request #11658 from vimeo/fix_gpg

Fix GPG signing key

Merge pull request #11628 from danog/fix_conditional_taints

Fix conditional taints