ci: use GitHub action

Author: nikku

.github/workflows/CI.yml

@@ -0,0 +1,23 @@
+name: CI
+on: [ push, pull_request ]
+jobs:
+  Build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: [ 20 ]
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Use Node.js ${{matrix.node-version}}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{matrix.node-version}}
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm ci
+    - name: Build
+      run: npm run all

.travis.yml

@@ -3,7 +3,7 @@
 
 # diffpatch
 
-[![Build Status](https://secure.travis-ci.com/bpmn-io/diffpatch.svg)](http://travis-ci.com/bpmn-io/diffpatch)
+[![CI](https://github.com/bpmn-io/diffpatch/actions/workflows/CI.yml/badge.svg)](https://github.com/bpmn-io/diffpatch/actions/workflows/CI.yml)
 
 Diff and patch JavaScript objects.
 
@@ -257,4 +257,4 @@ This library is a fork of [jsondiffpatch](https://github.com/benjamine/jsondiffp
 
 ## License
 
-MIT
+MIT