test: Break version enforcement

Signed-off-by: Joas Schilling <coding@schilljs.com>

Author: nickvergessen

psalm.xml

@@ -4,7 +4,6 @@
     findUnusedBaselineEntry="true"
     findUnusedCode="false"
     resolveFromConfigFile="true"
-    phpVersion="8.1"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"