chore(deps): update dependency chai to v4.4.0

Author: renovate[bot]

package-lock.json

@@ -47,7 +47,7 @@
     "@semantic-release/github": "5.5.8",
     "@semantic-release/npm": "5.3.5",
     "acorn": "7.4.1",
-    "chai": "4.3.3",
+    "chai": "4.4.0",
     "eslint": "6.8.0",
     "eslint-config-standard": "14.1.1",
     "eslint-plugin-import": "2.22.1",