Update CHANGELOG.md for 9.2.0

...elogs/unreleased/30903-vertically-align-mini-pipeline.yml

...le-test-settings-on-services-when-repository-is-empty.yml

...cessary-padding-along-left-side-of-assignees-dropdown.yml

changelogs/unreleased/31106-tabs-alignment.yml

...-improve-test-settings-for-services-in-empty-projects.yml

changelogs/unreleased/31156-environments-vue-service.yml

...eleased/31157-respect-project-features-in-wiki-search.yml

changelogs/unreleased/31193-ff-copy.yml

...ed/31254-change-git-commit-command-in-existing-folder.yml

.../31362_decrease_cyclomatic_complexity_threshold_step1.yml

...ogs/unreleased/31383-admin-remove-user-text-incorrect.yml

changelogs/unreleased/31544-size-of-project-from-api.yml

changelogs/unreleased/31558-job-dropdown.yml

changelogs/unreleased/31560-workhose-gitaly-from-mirror.yml

changelogs/unreleased/31647-fix-snippet-content_html.yml

...31671-merge-request-message-contains-carriage-returns.yml

changelogs/unreleased/31689-request-access-spacing.yml

...ogs/unreleased/31704-misaligned-buttons-in-wiki-pages.yml

changelogs/unreleased/31760-add-tooltips-to-note-actions.yml

changelogs/unreleased/31810-commit-link.yml