chore(deps): update dependency expect to v26

Author: renovate-bot

package.json

@@ -128,7 +128,7 @@
     "@types/mocha": "5.2.7",
     "@types/node": "13.13.5",
     "@types/sinon": "7.0.13",
-    "expect": "^24.1.0",
+    "expect": "^26.4.2",
     "husky": "^1.3.1",
     "lnfs-cli": "^2.1.0",
     "lodash": "^4.17.11",