fix: 补充图片压缩依赖

package.json

@@ -46,6 +46,7 @@
     "del": "^6.0.0",
     "gulp": "^4.0.2",
     "gulp-babel": "^8.0.0",
+    "gulp-imagemin": "5.0.1",
     "jszip": "^3.7.1",
     "scp2": "0.5.0",
     "ssh2-sftp-client": "6.0.1",