Merge pull request #49 from zhw2590582/dependabot/npm_and_yarn/cpy-8.0.0

Bump cpy from 7.3.0 to 8.0.0

package.json

@@ -41,7 +41,7 @@
         "browser-env": "^3.3.0",
         "chai": "^4.2.0",
         "chalk": "^3.0.0",
-        "cpy": "^7.3.0",
+        "cpy": "^8.0.0",
         "cross-env": "^6.0.3",
         "cssnano": "^4.1.10",
         "del": "^5.1.0",