Update references to the default branch

Author: nilmerg

.github/workflows/L10n-update.yml

@@ -3,7 +3,7 @@ name: L10n Update
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   trigger-update:

.github/workflows/php.yml

@@ -3,11 +3,11 @@ name: PHP Tests
 on:
   push:
     branches:
-      - master
+      - main
       - release/*
   pull_request:
     branches:
-      - master
+      - main
 
 jobs:
   lint:

README.md

@@ -1,8 +1,8 @@
 # Icinga Reporting
 
 [![PHP Support](https://img.shields.io/badge/php-%3E%3D%207.2-777BB4?logo=PHP)](https://php.net/)
-![Build Status](https://github.com/icinga/icingaweb2-module-reporting/workflows/PHP%20Tests/badge.svg?branch=master)
-[![Github Tag](https://img.shields.io/github/tag/Icinga/icingaweb2-module-reporting.svg)](https://github.com/Icinga/icingaweb2-module-reporting)
+[![PHP Tests](https://github.com/Icinga/icingaweb2-module-reporting/actions/workflows/php.yml/badge.svg)](https://github.com/Icinga/icingaweb2-module-reporting/actions/workflows/php.yml)
+[![Github Tag](https://img.shields.io/github/tag/Icinga/icingaweb2-module-reporting.svg)](https://github.com/Icinga/icingaweb2-module-reporting/releases/latest)
 
 ![Icinga Logo](https://icinga.com/wp-content/uploads/2014/06/icinga_logo.png)