fix(deps): update dependency dot-prop to v6.0.1

Author: renovate-bot

package.json

@@ -59,7 +59,7 @@
     "@types/long": "^4.0.0",
     "arrify": "2.0.0",
     "concat-stream": "^2.0.0",
-    "dot-prop": "6.0.0",
+    "dot-prop": "6.0.1",
     "escape-string-regexp": "4.0.0",
     "extend": "^3.0.2",
     "google-gax": "^5.0.1-rc.0",