fix: Add missed jose import for main function

docker/volumes/functions/main/index.ts

@@ -1,4 +1,5 @@
 import { serve } from 'https://deno.land/std@0.131.0/http/server.ts'
+import * as jose from 'https://deno.land/x/jose@v4.14.4/index.ts'
 
 console.log('main function started')