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.

.phive/phars.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="phpstan" version="1.11.8" installed="1.11.8" location="./tools/phpstan" copy="true"/>
+  <phar name="phpstan" version="1.*" installed="1.12.13" location="./tools/phpstan" copy="false"/>
   <phar name="phpunit" version="^10.5.20" installed="10.5.20" location="./tools/phpunit" copy="true"/>
   <phar name="phpcs" version="^3.10.1" installed="3.10.1" location="./tools/phpcs" copy="true"/>
   <phar name="phpcbf" version="^3.10.1" installed="3.10.1" location="./tools/phpcbf" copy="true"/>