fix: migrate from node-cron to croner (#5407)

packages/api/src/router/cron-jobs.ts

@@ -2,7 +2,7 @@ import { observable } from "@trpc/server/observable";
 import z from "zod/v4";
 
 import { createLogger } from "@homarr/core/infrastructure/logs";
-import { cronExpressionSchema, jobGroupKeys, jobNameSchema } from "@homarr/cron-job-api";
+import { jobGroupKeys, jobNameSchema } from "@homarr/cron-job-api";
 import { cronJobApi } from "@homarr/cron-job-api/client";
 import type { TaskStatus } from "@homarr/cron-job-status";
 import { createCronJobStatusChannel } from "@homarr/cron-job-status";
@@ -35,7 +35,7 @@ export const cronJobsRouter = createTRPCRouter({
     .input(
       z.object({
         name: jobNameSchema,
-        cron: cronExpressionSchema,
+        cron: z.string(),
       }),
     )
     .mutation(async ({ input }) => {