fix(deps): upgrade to sqlalchemy version 2

Bump sqlalchemy to version 2.0.22

There are quite some changes that happened with v2.
We are currently relying on the "auto-commit" feature which was removed.
For the moment we can use a wrapper class to mimic the auto-commit
behavior allowing us to move to v2.

Ultimately, the (db) session management needs some overhaul though.

Signed-off-by: moson <moson@archlinux.org>

test/test_voteinfo.py

@@ -1,5 +1,5 @@
 import pytest
-from sqlalchemy.exc import IntegrityError
+from sqlalchemy.exc import IntegrityError, SAWarning
 
 from aurweb import db, time
 from aurweb.db import create, rollback
@@ -109,7 +109,7 @@ def test_voteinfo_null_submitter_raises(user: User):
 
 
 def test_voteinfo_null_agenda_raises(user: User):
-    with pytest.raises(IntegrityError):
+    with pytest.raises(IntegrityError), pytest.warns(SAWarning):
         with db.begin():
             create(
                 VoteInfo,
@@ -123,7 +123,7 @@ def test_voteinfo_null_agenda_raises(user: User):
 
 
 def test_voteinfo_null_user_raises(user: User):
-    with pytest.raises(IntegrityError):
+    with pytest.raises(IntegrityError), pytest.warns(SAWarning):
         with db.begin():
             create(
                 VoteInfo,
@@ -137,7 +137,7 @@ def test_voteinfo_null_user_raises(user: User):
 
 
 def test_voteinfo_null_submitted_raises(user: User):
-    with pytest.raises(IntegrityError):
+    with pytest.raises(IntegrityError), pytest.warns(SAWarning):
         with db.begin():
             create(
                 VoteInfo,
@@ -151,7 +151,7 @@ def test_voteinfo_null_submitted_raises(user: User):
 
 
 def test_voteinfo_null_end_raises(user: User):
-    with pytest.raises(IntegrityError):
+    with pytest.raises(IntegrityError), pytest.warns(SAWarning):
         with db.begin():
             create(
                 VoteInfo,