Update build badge in README

Author: dotansimha

README.md

@@ -1,7 +1,7 @@
 # The Graph CLI (graph-cli)
 
-[![npm (scoped)](https://img.shields.io/npm/v/@graphprotocol/graph-cli.svg)](https://www.npmjs.com/package/@graphprotocol/graph-cli)
-[![Build Status](https://travis-ci.org/graphprotocol/graph-cli.svg?branch=main)](https://travis-ci.org/graphprotocol/graph-cli)
+[![npm (scoped)](https://img.shields.io/npm/v/@graphprotocol/graph-cli.svg?color=success)](https://www.npmjs.com/package/@graphprotocol/graph-cli)
+[![Tests](https://github.com/graphprotocol/graph-cli/actions/workflows/ci.yml/badge.svg)](https://github.com/graphprotocol/graph-cli/actions/workflows/ci.yml)
 
 ## The Graph Command Line Interface