Bump lodash from 4.17.23 to 4.18.1 in /examples/node

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.23 to 4.18.1.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.23...4.18.1)

---
updated-dependencies:
- dependency-name: lodash
  dependency-version: 4.18.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

examples/node/package-lock.json

@@ -6,7 +6,7 @@
     "async": "^1.5.2",
     "google-protobuf": "^3.0.0",
     "@grpc/grpc-js": "^1.1.0",
-    "lodash": "^4.17.23",
+    "lodash": "^4.18.1",
     "minimist": "^1.2.0"
   }
 }