update main branch ref

Signed-off-by: Vikram Karve <vikram.karve@progress.com>

.github/workflows/build.yml

@@ -2,7 +2,7 @@ name: Build
 on:
   push:
     branches:
-      - master # or the name of your main branch
+      - main # or the name of your main branch
   pull_request:
     types: [opened, synchronize, reopened]
 jobs:
@@ -13,15 +13,15 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: sonarsource/sonarqube-scan-action@master
+      - uses: sonarsource/sonarqube-scan-action@main
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
           SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
       # If you wish to fail your job when the Quality Gate is red, uncomment the
       # following lines. This would typically be used to fail a deployment.
       # We do not recommend to use this in a pull request. Prefer using pull request
       # decoration instead.
-      # - uses: sonarsource/sonarqube-quality-gate-action@master
+      # - uses: sonarsource/sonarqube-quality-gate-action@main
       #   timeout-minutes: 5
       #   env:
       #     SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

CONTRIBUTING.md

@@ -1 +1 @@
-Please refer to https://github.com/chef/chef/blob/master/CONTRIBUTING.md
+Please refer to https://github.com/chef/chef/blob/main/CONTRIBUTING.md

README.md

@@ -1,14 +1,14 @@
 # Knife EC Backup
-[![Build status](https://badge.buildkite.com/4bc85427aab66accafbd7abb2932b9dd7f9208162c5be33488.svg?branch=master)](https://buildkite.com/chef-oss/chef-knife-ec-backup-master-verify)
+[![Build status](https://badge.buildkite.com/4bc85427aab66accafbd7abb2932b9dd7f9208162c5be33488.svg?branch=main)](https://buildkite.com/chef-oss/chef-knife-ec-backup-main-verify)
 [![Gem Version](https://badge.fury.io/rb/knife-ec-backup.svg)](https://badge.fury.io/rb/knife-ec-backup)
 
-**Umbrella Project**: [Knife](https://github.com/chef/chef-oss-practices/blob/master/projects/knife.md)
+**Umbrella Project**: [Knife](https://github.com/chef/chef-oss-practices/blob/main/projects/knife.md)
 
-**Project State**: [Active](https://github.com/chef/chef-oss-practices/blob/master/repo-management/repo-states.md#active)
+**Project State**: [Active](https://github.com/chef/chef-oss-practices/blob/main/repo-management/repo-states.md#active)
 
-**Issues [Response Time Maximum](https://github.com/chef/chef-oss-practices/blob/master/repo-management/repo-states.md)**: 14 days
+**Issues [Response Time Maximum](https://github.com/chef/chef-oss-practices/blob/main/repo-management/repo-states.md)**: 14 days
 
-**Pull Request [Response Time Maximum](https://github.com/chef/chef-oss-practices/blob/master/repo-management/repo-states.md)**: 14 days
+**Pull Request [Response Time Maximum](https://github.com/chef/chef-oss-practices/blob/main/repo-management/repo-states.md)**: 14 days
 
 ## Description