Issue #3249109 by catch, quietone, Gábor Hojtsy, smustgrave, dww, xjm: Deprecate Bartik

(cherry picked from commit a58a9b0569)

core/themes/bartik/bartik.info.yml

@@ -13,6 +13,8 @@
 # changes.
 name: Bartik
 type: theme
+lifecycle: deprecated
+lifecycle_link: https://www.drupal.org/node/3223395#s-bartik
 base theme: false
 description: 'A flexible, recolorable theme with many regions and a responsive, mobile-first layout.'
 package: Core

core/themes/bartik/tests/src/Functional/BartikTest.php

@@ -8,6 +8,7 @@ use Drupal\Tests\BrowserTestBase;
  * Tests the Bartik theme.
  *
  * @group bartik
+ * @group legacy
  */
 class BartikTest extends BrowserTestBase {