chore: add ignore (midwayjs#4365)

Author: czy88840616

packages/cron/jest.config.js

@@ -5,4 +5,9 @@ module.exports = {
   coveragePathIgnorePatterns: ['<rootDir>/test/', '<rootDir>/dist/'],
   setupFilesAfterEnv: ['./jest.setup.js'],
   coverageProvider: 'v8',
+  collectCoverageFrom: [
+    "**/*.{js,ts}",
+    "!**/node_modules/**",
+    "!**/dist/**",
+  ]
 };