Update dependency nconf to v0.11.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nconf	0.11.2 -> 0.11.3

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Release Notes

flatiron/nconf

### [`v0.11.3`](https://togithub.com/flatiron/nconf/releases/v0.11.3) [Compare Source](https://togithub.com/flatiron/nconf/compare/v0.11.2...v0.11.3) Fixes: - Handle case where parsed config object doesn't have a prototype ([#​365](https://togithub.com/flatiron/nconf/issues/365)) ([@​ilkkao](https://togithub.com/ilkkao))

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