Upgrade SQLAlchemy

[amCap1712]

Remove sqlalchemy-dst, update SQLAlchemy.

[github-actions]

Unit Test Results

0 files   -   1  0 suites   - 1   0s ⏱️ -24s
0 tests  - 81  0 ✔️  - 81  0 💤 ±0  0 ❌ ±0 

Results for commit c53f512. ± Comparison against base commit be91cbd.

This pull request removes 81 tests.

brainzutils.flask.test.test_main.FlaskTestCase ‑ test_create_app
brainzutils.flask.test.test_main.FlaskTestCase ‑ test_debug_toolbar
brainzutils.flask.test.test_ratelimit.RatelimitTestCase ‑ test_create_app
brainzutils.flask.test.test_ratelimit.RatelimitTestCase ‑ test_ratelimit
brainzutils.musicbrainz_db.tests.test_artist.TestArtist ‑ test_fetch_multiple_artists
brainzutils.musicbrainz_db.tests.test_artist.TestArtist ‑ test_fetch_multiple_artists_missing
brainzutils.musicbrainz_db.tests.test_artist.TestArtist ‑ test_fetch_multiple_artists_redirect
brainzutils.musicbrainz_db.tests.test_artist.TestArtist ‑ test_get_artist_by_mbid
brainzutils.musicbrainz_db.tests.test_artist.TestArtist ‑ test_get_artist_by_mbid_redirect
brainzutils.musicbrainz_db.tests.test_editor.TestEditor ‑ test_fetch_multiple_editors
…