chore(deps): bump flask-migrate from 2.7.0 to 4.0.4

Bumps [flask-migrate](https://github.com/miguelgrinberg/flask-migrate) from 2.7.0 to 4.0.4.
- [Changelog](https://github.com/miguelgrinberg/Flask-Migrate/blob/main/CHANGES.md)
- [Commits](miguelgrinberg/Flask-Migrate@v2.7.0...v4.0.4)

---
updated-dependencies:
- dependency-name: flask-migrate
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

poetry.lock

@@ -123,7 +123,7 @@ sqlalchemy-citext = "^1.8.0"
 coolname = "^1.1.0"
 python-slugify = "^8.0.1"
 cryptography = "40.0.2"
-Flask-Migrate = "2.7.0"
+Flask-Migrate = "4.0.4"
 marrow-mailer = {git = "https://github.com/LexMachinaInc/mailer.git", rev = "develop"}
 marrow-util = {git = "https://github.com/LexMachinaInc/util.git", rev = "develop"}
 jinja2 = "<3"