ci(PHP 8.1): add CI processes for PHP 8.1

.github/workflows/main-ci.yml

@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php_version: [ "5.6", "7.0", "7.1", "7.2", "7.3", "7.4", "8.0" ]
+        php_version: [ "5.6", "7.0", "7.1", "7.2", "7.3", "7.4", "8.0", "8.1" ]
         service: [ php-fpm, php-worker, workspace ]
     steps:
       - uses: actions/checkout@v2

.travis.yml

@@ -16,6 +16,7 @@ env:
     - PHP_VERSION=7.3 BUILD_SERVICE=php-worker
     - PHP_VERSION=7.4 BUILD_SERVICE=php-worker
     - PHP_VERSION=8.0 BUILD_SERVICE=php-worker
+    - PHP_VERSION=8.1 BUILD_SERVICE=php-worker
 
     - PHP_VERSION=7.0 BUILD_SERVICE=laravel-horizon
     - PHP_VERSION=7.1 BUILD_SERVICE=laravel-horizon
@@ -23,6 +24,7 @@ env:
     - PHP_VERSION=7.3 BUILD_SERVICE=laravel-horizon
     - PHP_VERSION=7.4 BUILD_SERVICE=laravel-horizon
     - PHP_VERSION=8.0 BUILD_SERVICE=laravel-horizon
+    - PHP_VERSION=8.1 BUILD_SERVICE=laravel-horizon
 
     - PHP_VERSION=NA BUILD_SERVICE=solr
     - PHP_VERSION=NA BUILD_SERVICE="mssql rethinkdb aerospike"