fix(cs): another rule to exclude

Author: Mte90

CodeatCodingStandard/ruleset.xml

@@ -133,6 +133,7 @@
         <exclude name="WordPress.CSRF.NonceVerification.NoNonceVerification"/>
         <exclude name="WordPress.Classes.ClassInstantiation.MissingParenthesis"/>
         <exclude name="WordPress.NamingConventions.ValidHookName.UseUnderscores"/>
+        <exclude name="WordPress.NamingConventions.ValidHookName.NotLowercase"/>
     </rule>
     <rule ref="Generic.CodeAnalysis.ForLoopWithTestFunctionCall"/>
     <rule ref="Generic.CodeAnalysis.UnconditionalIfStatement"/>