Bump flask-migrate from 2.4.0 to 2.5.2

Bumps [flask-migrate](https://github.com/miguelgrinberg/flask-migrate) from 2.4.0 to 2.5.2.
- [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/v2.4.0...v2.5.2)

Pipfile.lock

@@ -150,11 +150,11 @@
         },
         "flask-migrate": {
             "hashes": [
-                "sha256:a361578cb829681f860e4de5ed2c48886264512f0c16144e404c36ddc95ab49c",
+                "sha256:6fb038be63d4c60727d5dfa5f581a6189af5b4e2925bc378697b4f0a40cfb4e1",
-                "sha256:c24d105c5d6cc670de20f8cbfb909e04f4e04b8784d0df070005944de1f21549"
+                "sha256:a96ff1875a49a40bd3e8ac04fce73fdb0870b9211e6168608cbafa4eb839d502"
             ],
             "index": "pypi",
-            "version": "==2.4.0"
+            "version": "==2.5.2"
         },
         "flask-sqlalchemy": {
             "hashes": [

requirements.txt

@@ -13,7 +13,7 @@ cloudpickle==1.1.1
 csscompressor==0.9.5
 decorator==4.4.0
 doit==0.31.1
-flask-migrate==2.4.0
+flask-migrate==2.5.2
 flask-sqlalchemy==2.4.0
 flask==1.0.3
 gunicorn==19.9.0