refactor: update root phpcs.xml

Author: shvlv

phpcs.xml

@@ -6,8 +6,8 @@
     <file>./Inpsyde/Helpers</file>
     <file>./Inpsyde/Sniffs</file>
     <file>./tests/src</file>
-    <file>./tests/cases</file>
-    <file>./tests/e2e/E2eTest.php</file>
+    <file>./tests/unit/cases</file>
+    <file>./tests/e2e/cases</file>
 
     <!--
     PHP 7.4 and higher.
@@ -25,7 +25,7 @@
     </rule>
 
     <rule ref="Inpsyde.CodeQuality.FunctionLength">
-        <exclude-pattern>./tests/cases/</exclude-pattern>
+        <exclude-pattern>./tests/unit/cases/</exclude-pattern>
     </rule>
 
 </ruleset>