update code coverage badge

Author: github-actions[bot]

README.md

@@ -1,7 +1,7 @@
 # EA Framework v3
 
 [![NPM version](https://img.shields.io/npm/v/@chainlink/external-adapter-framework.svg?style=flat)](https://www.npmjs.com/package/@chainlink/external-adapter-framework)
-![Coverage](https://img.shields.io/badge/coverage-99.12%25-green)
+![Coverage](https://img.shields.io/badge/coverage-99.13%25-green)
 
 Framework to create External adapters, microservices that serve as middleware to facilitate connections between Chainlink Nodes and Data Providers (DP).