fix typedefs: add taskTimeout to cypress config (#7521)

cli/types/cypress.d.ts

@@ -2296,6 +2296,11 @@ declare namespace Cypress {
      * @default 30000
      */
     responseTimeout: number
+    /**
+     * Time, in milliseconds, to wait for a task to finish executing during a cy.task() command
+     * @default 60000
+     */
+    taskTimeout: number
     /**
      * Path to folder where application files will attempt to be served from
      * @default root project folder

cli/types/tests/cypress-tests.ts

@@ -40,6 +40,8 @@ namespace CypressConfigTests {
   Cypress.config('baseUrl', '.') // $ExpectType void
   Cypress.config('baseUrl', null) // $ExpectType void
   Cypress.config({ baseUrl: '.', }) // $ExpectType void
+
+  Cypress.config('taskTimeout') // $ExpectType number
 }
 
 namespace CypressEnvTests {