Upgrade gulp again (revert of a revert)

This reverts commit 708e711211.
2020-11-24 15:32:10 -08:00 · 2020-11-24 15:32:10 -08:00 · 14b1bc7933
--- a/package.json
+++ b/package.json
@ -12,7 +12,7 @@
    "check-lfs": "node ./build/check-lfs.js"
  },
  "devDependencies": {
-    "gulp": "^3.9.1",
+    "gulp": "^4.0.2",
    "husky": "^1.3.1",
    "lint-staged": "^8.1.5",
    "shelljs": "^0.7.8"
--- a/yarn.lock
+++ b/yarn.lock