Fix migration tests.

.gitlab/ci/test/migration.yml

@@ -18,13 +18,13 @@
     - git fetch --unshallow
     - git checkout stable
     - !reference [.scripts, source_rvm]
-    - rvm use 3.2.3
+    # - rvm use 3.2.3
     - !reference [.scripts, bundle_install]
     - !reference [.scripts, configure_environment]
     - !reference [.scripts, zammad_db_init]
     # Then, switch to the current commit, migrate to it and run a few selected tests.
     - git checkout $CI_COMMIT_SHA
-    - rvm use 3.2.4
+    # - rvm use 3.2.4
     - !reference [.scripts, bundle_install]
     # Force redis usage, even if it was disabled by the initial configure_environment script of stable.
     - export REDIS_URL=redis://redis