drupalci.yml: Added composer require "cweagans/composer-patches:^1.5.0"

drupalci.yml

@@ -36,6 +36,8 @@ build:
           - sudo -u www-data composer config --no-plugins allow-plugins.cweagans/composer-patches true
           - sudo -u www-data composer config extra.enable-patching true
           - sudo -u www-data composer config extra.composer-exit-on-patch-failure true
+          # Note: this must be kept up to date with what's in our composer.json.
+          - sudo -u www-data composer require "cweagans/composer-patches:^1.5.0"
         halt-on-fail: true
       run_tests.phpunit:
         types: 'PHPUnit-Unit'