Mark PHP 8.1 as a normal tested version

Signed-off-by: William Desportes <[email protected]>

Author: williamdes

.github/workflows/tests.yml

@@ -15,12 +15,11 @@ jobs:
         continue-on-error: ${{ matrix.experimental }}
         strategy:
             matrix:
-                php-version: ["7.1", "7.2", "7.3", "7.4", "8.0"]
+                php-version: ["7.1", "7.2", "7.3", "7.4", "8.0", "8.1"]
                 os: [ubuntu-latest]
                 experimental: [false]
                 composer-options: ['']
                 include:
-                  - { php-version: '8.1', experimental: false, os: ubuntu-latest, composer-options: '--ignore-platform-reqs' }
                   - { php-version: 'nightly', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-reqs' }
         steps:
             - uses: actions/checkout@v2