Add tests on mode --prefer-lowest'

Author: williamdes

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
                 php-version: ["7.4", "8.0", "8.1", "8.2", "8.3", "8.4"]
                 os: [ubuntu-latest]
                 experimental: [false]
-                composer-options: ['']
+                composer-options: ['', '--prefer-lowest']
                 include:
                     - { php-version: 'nightly', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-reqs' }
         steps:
@@ -56,7 +56,7 @@ jobs:
                 php-version: ["7.4", "8.0", "8.1", "8.2", "8.3", "8.4"]
                 os: [ubuntu-latest]
                 experimental: [false]
-                composer-options: ['']
+                composer-options: ['', '--prefer-lowest']
                 include:
                     - { php-version: 'nightly', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-reqs' }
         steps:
@@ -88,7 +88,7 @@ jobs:
                 php-version: ["7.4", "8.0", "8.1", "8.2", "8.3", "8.4"]
                 os: [ubuntu-latest]
                 experimental: [false]
-                composer-options: ['']
+                composer-options: ['', '--prefer-lowest']
                 include:
                     - { php-version: 'nightly', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-reqs' }
         steps:
@@ -122,7 +122,7 @@ jobs:
                 php-version: ["7.4", "8.0", "8.1", "8.2", "8.3", "8.4"]
                 os: [ubuntu-latest]
                 experimental: [false]
-                composer-options: ['']
+                composer-options: ['', '--prefer-lowest']
                 include:
                     - { php-version: 'nightly', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-reqs' }
         steps: