move development back to drupal.org

.gitlab-ci.yml

-include:
-  - project: 'drupalspoons/composer-plugin'
-    # Best practice is to pin to a tag or a SHA1. https://docs.gitlab.com/ee/ci/yaml/#includefile
-    ref: "2.1.0"
-    # The template below may be inspected at https://gitlab.com/drupalspoons/composer-plugin/-/blob/master/templates/.gitlab-ci.yml
-    file: 'templates/.gitlab-ci.yml'
-# Run tests on Drupal 9.1 by default, including a phpspec/prophecy-phpunit requirement.
-composer_node:
-  variables:
-    # https://getcomposer.org/doc/articles/versions.md#next-significant-release-operators
-    DRUPAL_CORE_CONSTRAINT: ~9.1.0
-  after_script:
-    # See https://www.drupal.org/project/drupal/issues/3182653
-    # This will fail on PHPUnit 8-, that is OK as its not needed there.
-    - vendor/bin/spoon require --no-progress phpspec/prophecy-phpunit:^2 || true
-
-phpcs:
-  allow_failure: false

composer.json

@@ -15,8 +15,11 @@
     "issues": "https://www.drupal.org/project/issues/migrate_source_csv",
     "source": "https://cgit.drupalcode.org/migrate_source_csv"
   },
-  "minimum-stability": "dev",
+  "minimum-stability": "stable",
   "prefer-stable": true,
+  "config": {
+    "preferred-install": "dist"
+  },
   "require": {
     "php": ">=7.1",
     "drupal/core": "^8.7 || ^9.0",