Update dependency nodemon to v2.0.20

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nodemon (source)	2.0.19 -> 2.0.20

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Release Notes

remy/nodemon

### [`v2.0.20`](https://togithub.com/remy/nodemon/releases/tag/v2.0.20) [Compare Source](https://togithub.com/remy/nodemon/compare/v2.0.19...v2.0.20) ##### Bug Fixes - remove postinstall script ([e099e91](https://togithub.com/remy/nodemon/commit/e099e91cb6ff9cbb7912af86d22b91cd855a1ad0))

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