[SYSTEMDS-3193] Promote svn repo `dev/systemds/2.x-rc` to `release/systemds/2.x`
[SYSTEMDS-3193] Promote svn repo `dev/systemds/2.x-rc` to `release/systemds/2.x`

Closes #1427.
apache/incubator-systemml,apache/incubator-systemml,apache/incubator-systemml,apache/incubator-systemml,apache/incubator-systemml,apache/incubator-systemml