update flask (#1774)

Author: ReimarBauer

localbuild/meta.yaml

@@ -61,7 +61,7 @@ requirements:
     - matplotlib >=3.3.2,<3.6
     - itsdangerous
     - pyjwt
-    - flask >=2.2.0
+    - flask >=2.3.2
     - flask-httpauth
     - flask-mail
     - flask-migrate