rename master to main

.github/workflows/ci.yml

@@ -4,11 +4,11 @@ name: CI
 
 # Controls when the workflow will run
 on:
-  # Triggers the workflow on push or pull request events but only for the master branch
+  # Triggers the workflow on push or pull request events but only for the main branch
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
@@ -23,7 +23,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@master
+      - uses: actions/checkout@main
 
       - name: Install modules
         run: npm ci

README.md

@@ -4,7 +4,7 @@ SDK for [EmailJS.com](https://www.emailjs.com) customers.
 \
 Use your EmailJS account for sending emails.
 
-[![codecov](https://codecov.io/gh/emailjs-com/emailjs-sdk/branch/master/graph/badge.svg)](https://codecov.io/gh/emailjs-com/emailjs-sdk)
+[![codecov](https://codecov.io/gh/emailjs-com/emailjs-sdk/branch/main/graph/badge.svg)](https://codecov.io/gh/emailjs-com/emailjs-sdk)
 [![npm version](https://img.shields.io/npm/v/@emailjs/browser.svg)](https://www.npmjs.com/package/@emailjs/browser)
 
 ## Disclaimer