Explicitly allow dev versions in CI

Author: ralflang

.github/workflows/ci.yml

@@ -47,9 +47,10 @@ jobs:
       run: composer config -g github-oauth.github.com ${{ secrets.GITHUB_TOKEN }}
     - name: Install horde/test dependency and other dependencies
       run: |
-        ## For unclear reasons, github action fails randomly if we do not install before we require.
-        COMPOSER_ROOT_VERSION=dev-FRAMEWORK_6_0 composer install
-        COMPOSER_ROOT_VERSION=dev-FRAMEWORK_6_0 composer require --dev horde/test dev-FRAMEWORK_6_0 horde/log ^3
+
+        COMPOSER_ROOT_VERSION=dev-FRAMEWORK_6_0 composer config minimum-stability dev
+        COMPOSER_ROOT_VERSION=dev-FRAMEWORK_6_0 composer install --prefer-stable --no-progress
+        COMPOSER_ROOT_VERSION=dev-FRAMEWORK_6_0 composer require --prefer-stable --dev horde/test dev-FRAMEWORK_6_0 horde/log ^3
     - name: install horde/test ^3
       run: composer require horde/test ^3
     - name: install horde/http ^3