* chore: 🤖 upgrade ember-data to v5.3.11 * Add missing copyright headers * refactor: 💡 remove comment * chore: 🤖 update yarn.lock due to merge conflict ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * fix: 🐛 undo ember-source upgrade (should be upgraded w/ ember) ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * chore: 🤖 move dep to devDeps & resolve test-helper version ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * fix: 🐛 unique record id error bug fix using store.push ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * refactor: 💡 cleanup ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * Delete old deprecation initializer (#2748) * refactor: 💡 import from'ember-data/store' ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * refactor: 💡 clean up comments ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 * refactor: 💡 remove compatWith comment ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-16544 --------- Co-authored-by: Carlos Alcaide Corvo <ccorvo@hashicorp.com>