Add tests on PHP 8.1 (#80)

Signed-off-by: Lukas Kämmerling <lukas.kaemmerling@hetzner-cloud.de>

Author: LKaemmerling

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ ubuntu-latest ]
-        php: [ 7.2, 7.3, 7.4, 8.0 ]
+        php: [ 7.2, 7.3, 7.4, 8.0, 8.1 ]
         dependency-version: [ prefer-lowest, prefer-stable ]
         redis-version: [ 6 ]
 

README.md

@@ -129,7 +129,7 @@ composer require promphp/prometheus_push_gateway_php
 
 ### Dependencies
 
-* PHP ^7.2
+* PHP ^7.2 | ^8.0
 * PHP Redis extension
 * PHP APCu extension
 * [Composer](https://getcomposer.org/doc/00-intro.md#installation-linux-unix-osx)