docs(README): update build status badge

Author: gr2m

.github/workflows/test.yml

@@ -39,9 +39,6 @@ jobs:
     needs: test_matrix
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
-        with:
-          node-version: ${{ matrix.node-version }}
+      - uses: actions/setup-node@v2
       - uses: bahmutov/npm-install@v1
       - run: npm run lint

README.md

@@ -1,7 +1,6 @@
 # semantic-release-cli
 
-[![Travis](https://img.shields.io/travis/semantic-release/cli.svg)](https://travis-ci.org/semantic-release/cli)
-[![Greenkeeper badge](https://badges.greenkeeper.io/semantic-release/cli.svg)](https://greenkeeper.io/)
+[![Build Status](https://github.com/semantic-release/cli/workflows/Test/badge.svg)](https://github.com/semantic-release/cli/actions?query=workflow%3ATest+
 
 ## Install