Log Message:
devel/php-psr: update to 1.2.0

1.1.0 (2021-04-10)

* Update psr/container to 1.1.1
* Add version ID constants to each header
* Use __dllspec(dllimport) where appropriate in php_psr.h on windows

1.2.0 (2021-12-11)

* PHP 8.1 compatibility (@Jeckerson)
* All classes are now defined in a separate namespace `PsrExt` and aliased
  into the `Psr` namespace to aid in debuggging compatibility issues for
  framework maintainers