chore: update phpstan version and remove redundant error logs

This commit updates the phpstan version in the .phive/phars.xml file from 1.11.8 to 1.12.13 and sets its copy attribute to false. It also removes all errors in the phpstan-baseline.neon file as they are no longer relevant or have been fixed.

merged

mentioned in commit c6b39b2b

This MR is included in version 2.6.1

The release is available on GitLab release.

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