fix: nodemon installation for node 10.x and beyond (#1441)

* chore: update the package-lock file using pinned version

The commit 97f8d0a introduces versions
prefixed with carets whereas this lockfile needs to pin each
dependencies (same when a user executes `npm i`).

* chore: update chokidar to 2.0.4

this version (paulmillr/chokidar@11aea72)
fixes the issue related to "upath" that was limiting the node runtime to
9.x (https://github.com/anodynos/upath/blob/v1.0.2/package.json#L43).