Bump flask-migrate from 2.7.0 to 4.1.0

Bumps [flask-migrate](https://github.com/miguelgrinberg/flask-migrate) from 2.7.0 to 4.1.0.
- [Release notes](https://github.com/miguelgrinberg/flask-migrate/releases)
- [Changelog](https://github.com/miguelgrinberg/Flask-Migrate/blob/main/CHANGES.md)
- [Commits](miguelgrinberg/Flask-Migrate@v2.7.0...v4.1.0)

---
updated-dependencies:
- dependency-name: flask-migrate
  dependency-version: 4.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.in

@@ -1,6 +1,6 @@
 Flask-Gzip==0.2
 Flask-Mail==0.10.0
-Flask-Migrate~=2.7.0
+Flask-Migrate~=4.1.0
 Flask-pyoidc~=3.7.0
 Flask~=1.1.4
 csh-ldap @ git+https://github.com/costowell/csh_ldap@67dd183744746c758d6c13878f539437d2628b63

requirements.txt

@@ -50,7 +50,7 @@ flask-gzip==0.2
     # via -r requirements.in
 flask-mail==0.10.0
     # via -r requirements.in
-flask-migrate==2.7.0
+flask-migrate==4.1.0
     # via -r requirements.in
 flask-pyoidc==3.7.0
     # via -r requirements.in