fix(curriculum): allow any inventory array declaration in Inventory Management Program (freeCodeCamp#60606)

Author: Supravisor

curriculum/challenges/english/25-front-end-development/lab-inventory-management-program/66d75dd0aa65a71600dc669b.md

@@ -30,7 +30,7 @@ Fulfill the user stories below and get all the tests to pass to complete the lab
 You should declare an empty array named `inventory`.
 
 ```js
-assert.match(__helpers.removeJSComments(code), /(let|const)\s+inventory\s*=\s*\[\s*\]\s*;?/)
+assert.match(__helpers.removeJSComments(code), /(let|const|var)\s+inventory\s*=\s*\[\s*\]\s*;?/)
 ```
 
 You should have a function named `findProductIndex`.