README: Replace david-dm.org with libraries.io

david-dm.org has been down so frequently that shields.io stopped
supporting the badge:
badges/shields#5133 (comment)
Switch to libraries.io, which has been reasonably reliable.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

Author: kevinoid

README.md

@@ -3,7 +3,7 @@ OpenApiTransformerPipeline
 
 [![Build Status](https://img.shields.io/github/actions/workflow/status/kevinoid/openapi-transformer-pipeline/node.js.yml?branch=main&style=flat&label=build)](https://github.com/kevinoid/openapi-transformer-pipeline/actions?query=branch%3Amain)
 [![Coverage](https://img.shields.io/codecov/c/github/kevinoid/openapi-transformer-pipeline/main.svg?style=flat)](https://app.codecov.io/gh/kevinoid/openapi-transformer-pipeline/branch/main)
-[![Dependency Status](https://img.shields.io/david/kevinoid/openapi-transformer-pipeline.svg?style=flat)](https://david-dm.org/kevinoid/openapi-transformer-pipeline)
+[![Dependency Status](https://img.shields.io/librariesio/release/npm/@kevinoid/openapi-transformer-pipeline.svg?style=flat)](https://libraries.io/npm/@kevinoid%2Fopenapi-transformer-pipeline)
 [![Supported Node Version](https://img.shields.io/node/v/@kevinoid/openapi-transformer-pipeline.svg?style=flat)](https://www.npmjs.com/package/@kevinoid/openapi-transformer-pipeline)
 [![Version on NPM](https://img.shields.io/npm/v/@kevinoid/openapi-transformer-pipeline.svg?style=flat)](https://www.npmjs.com/package/@kevinoid/openapi-transformer-pipeline)