Bump flask-migrate from 2.5.3 to 2.7.0

Bumps [flask-migrate](https://github.com/miguelgrinberg/flask-migrate) from 2.5.3 to 2.7.0.
- [Release notes](https://github.com/miguelgrinberg/flask-migrate/releases)
- [Changelog](https://github.com/miguelgrinberg/Flask-Migrate/blob/master/CHANGES.md)
- [Commits](https://github.com/miguelgrinberg/flask-migrate/compare/v2.5.3...v2.7.0)

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

Pipfile.lock

@@ -156,11 +156,11 @@
         },
         "flask-migrate": {
             "hashes": [
-                "sha256:4dc4a5cce8cbbb06b8dc963fd86cf8136bd7d875aabe2d840302ea739b243732",
-                "sha256:a69d508c2e09d289f6e55a417b3b8c7bfe70e640f53d2d9deb0d056a384f37ee"
+                "sha256:26871836a4e46d2d590cf8e558c6d60039e1c003079b240689d845726b6b57c0",
+                "sha256:ae2f05671588762dd83a21d8b18c51fe355e86783e24594995ff8d7380dffe38"
             ],
             "index": "pypi",
-            "version": "==2.5.3"
+            "version": "==2.7.0"
         },
         "flask-sqlalchemy": {
             "hashes": [

requirements.txt

@@ -13,7 +13,7 @@ cloudpickle==1.6.0
 csscompressor==0.9.5
 decorator==4.4.2
 doit==0.33.1
-flask-migrate==2.5.3
+flask-migrate==2.7.0
 flask-sqlalchemy==2.4.4
 flask==1.1.2
 gunicorn==20.0.4