put back acquia dam for d11 tests (#609)

* only add acquia dam for d11

* Update packages.yml

---------

Co-authored-by: Travis Carden <travis.carden@acquia.com>
Co-authored-by: sayan goswami <sayan.goswami@acquia.com>

config/packages.yml

@@ -157,13 +157,8 @@ drupal/media_acquiadam:
       version_dev: 2.x-dev
 
 drupal/acquia_dam:
-  core_matrix:
-    '10.2.0-beta1 || 11.*':
-      version: ~
-      version_dev: ~
-    '*':
-      version: 1.x
-      version_dev: 1.0.x-dev
+  version: 1.x
+  version_dev: 1.0.x-dev
 
 drupal/mysql56:
   type: library