Fix Werkzeug import error

[sea-kelp]

Description of Changes

Fix Werkzeug import error by upgrading Flask-Login to 0.6.2
https://stackoverflow.com/questions/73105877/importerror-cannot-import-name-parse-rule-from-werkzeug-routing

Creating openoversight_web_run    ... done
Traceback (most recent call last):
  File "/usr/src/app/OpenOversight/../create_db.py", line 2, in <module>
    from OpenOversight.app import create_app
  File "/usr/src/app/OpenOversight/app/__init__.py", line 10, in <module>
    from flask_login import LoginManager
  File "/usr/local/lib/python3.9/site-packages/flask_login/__init__.py", line 12, in <module>
    from .login_manager import LoginManager
  File "/usr/local/lib/python3.9/site-packages/flask_login/login_manager.py", line 35, in <module>
    from .utils import _create_identifier
  File "/usr/local/lib/python3.9/site-packages/flask_login/utils.py", line 14, in <module>
    from werkzeug.routing import parse_rule
ImportError: cannot import name 'parse_rule' from 'werkzeug.routing' (/usr/local/lib/python3.9/site-packages/werkzeug/routing/__init__.py)
ERROR: 1
error: Recipe `fresh-start` failed on line 55 with exit code 1

Notes for Deployment

None!

Screenshots (if appropriate)

Tests and linting

• I have rebased my changes on main

• just lint passes

• just test passes

[AetherUnbound]

Nice! This looks like a more future-facing approach than #166 - hopefully this works out!

[sea-kelp]

@AetherUnbound: Oh didn't see your PR! Happy to go with either solution

[AetherUnbound]

Works well for me!