chore(psalm): excludes node_modules from Psalm analysis

Excludes the `node_modules` directory from Psalm static analysis.

This prevents Psalm from analyzing files within `node_modules`,
which are generally not relevant to the project's codebase and can
cause irrelevant warnings and errors.

Author: firestar300

psalm.xml

@@ -12,6 +12,7 @@
             <directory name="src" />
             <directory name="dist" />
             <directory name="config" />
+            <directory name="node_modules" />
         </ignoreFiles>
     </projectFiles>
 
@@ -58,4 +59,4 @@
 
         <InvalidStringClass errorLevel="info" />
     </issueHandlers>
-</psalm>
+</psalm>