fix(deps): update dependency find-up to v4 (bcoe#119)

Author: renovate[bot]

package-lock.json

@@ -33,7 +33,7 @@
   "license": "ISC",
   "dependencies": {
     "@bcoe/v8-coverage": "^0.2.1",
-    "find-up": "^3.0.0",
+    "find-up": "^4.0.0",
     "foreground-child": "^1.5.6",
     "furi": "^1.3.0",
     "istanbul-lib-coverage": "^2.0.1",