Fix SQLAlchemy 2.0

[dyakovri]

Были сломаны аннотации и миграции

[github-actions]

✅ Result of Pytest Coverage

---------- coverage: platform linux, python 3.11.2-final-0 -----------

Name	Stmts	Miss	Cover
calendar_backend/init.py	2	0	100%
calendar_backend/main.py	6	6	0%
calendar_backend/exceptions.py	10	1	90%
calendar_backend/google_engine/init.py	3	0	100%
calendar_backend/google_engine/api_utils.py	27	16	41%
calendar_backend/google_engine/event.py	16	4	75%
calendar_backend/google_engine/event_from_db.py	20	10	50%
calendar_backend/google_engine/service.py	21	9	57%
calendar_backend/methods/init.py	2	0	100%
calendar_backend/methods/image.py	49	0	100%
calendar_backend/methods/list_calendar.py	70	49	30%
calendar_backend/methods/utils.py	35	26	26%
calendar_backend/models/init.py	2	0	100%
calendar_backend/models/base.py	64	1	98%
calendar_backend/models/db.py	93	0	100%
calendar_backend/routes/init.py	2	0	100%
calendar_backend/routes/base.py	92	7	92%
calendar_backend/routes/event/init.py	4	0	100%
calendar_backend/routes/event/comment.py	53	6	89%
calendar_backend/routes/event/comment_review.py	29	3	90%
calendar_backend/routes/event/event.py	89	8	91%
calendar_backend/routes/gcal.py	63	37	41%
calendar_backend/routes/group/init.py	2	0	100%
calendar_backend/routes/group/group.py	44	3	93%
calendar_backend/routes/lecturer/init.py	5	0	100%
calendar_backend/routes/lecturer/comment.py	54	8	85%
calendar_backend/routes/lecturer/comment_review.py	27	3	89%
calendar_backend/routes/lecturer/lecturer.py	66	8	88%
calendar_backend/routes/lecturer/photo.py	47	5	89%
calendar_backend/routes/lecturer/photo_review.py	51	20	61%
calendar_backend/routes/models/init.py	6	0	100%
calendar_backend/routes/models/base.py	61	9	85%
calendar_backend/routes/models/event.py	44	2	95%
calendar_backend/routes/models/group.py	39	16	59%
calendar_backend/routes/models/lecturer.py	46	2	96%
calendar_backend/routes/models/room.py	21	1	95%
calendar_backend/routes/room/init.py	2	0	100%
calendar_backend/routes/room/room.py	45	3	93%
calendar_backend/settings.py	26	0	100%
TOTAL	1338	263	80%
=======================	31	passed,	72