Fix assert unreachable, remove unused variables (#13753)

Small code cleanup

packages/twenty-server/src/engine/core-modules/cron/sentry-cron-monitor.decorator.ts

@@ -3,8 +3,8 @@ import * as Sentry from '@sentry/node';
 export function SentryCronMonitor(monitorSlug: string, schedule: string) {
   return function (
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    target: any,
-    propertyKey: string,
+    _target: any,
+    _propertyKey: string,
     descriptor: PropertyDescriptor,
   ) {
     const originalMethod = descriptor.value;