chore(deps): update dependency fs-extra to v8 (#113)

Author: renovate[bot]

package.json

@@ -55,7 +55,7 @@
     "chai": "^4.2.0",
     "cpy-cli": "^2.0.0",
     "esm": "^3.2.25",
-    "fs-extra": "^7.0.0",
+    "fs-extra": "^8.0.1",
     "husky": "^2.4.0",
     "istanbul-instrumenter-loader": "^3.0.1",
     "karma": "^4.1.0",

yarn.lock

@@ -2984,6 +2984,15 @@ fs-extra@^7.0.0, fs-extra@^7.0.1:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
+fs-extra@^8.0.1:
+  version "8.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-8.0.1.tgz#90294081f978b1f182f347a440a209154344285b"
+  integrity sha512-W+XLrggcDzlle47X/XnS7FXrXu9sDo+Ze9zpndeBxdgv88FHLm1HtmkhEwavruS6koanBjp098rUpHs65EmG7A==
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 fs-minipass@^1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.5.tgz#06c277218454ec288df77ada54a03b8702aacb9d"