fix(deps): update dependency fast-equals to v4

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
   "atomTestRunner": "./spec/runner",
   "dependencies": {
     "atom-ide-base": "^3.3.0",
-    "fast-equals": "^2.0.3",
+    "fast-equals": "^4.0.0",
     "lodash": "^4.17.21",
     "zadeh": "^3.0.0-beta.4"
   },