Fix issue with sqlalchemy >=2.0

SQL query needs to be wrapped in sqlalchemy.text.
Using raw string as been removed.

quetz/migrations/versions/3ba25f23fb7d_update_scoped_api_key_uploader_id.py

@@ -21,10 +21,12 @@ def upgrade():
  # Get all user_id/owner_id from channel scoped API keys
  # (user is anonymous - username is null)
  res = conn.execute(
- """SELECT api_keys.user_id, api_keys.owner_id FROM api_keys
+ sa.text(
+ """SELECT api_keys.user_id, api_keys.owner_id FROM api_keys
  INNER JOIN users ON users.id = api_keys.user_id
  WHERE users.username is NULL;
  """
+ )
  )
  results = res.fetchall()
  # Replace the uploader with the key owner (real user instead of the anonymous one)
@@ -42,10 +44,12 @@ def downgrade():
  # Get all user_id/owner_id from channel scoped API keys
  # (user is anonymous - username is null)
  res = conn.execute(
- """SELECT api_keys.user_id, api_keys.owner_id FROM api_keys
+ sa.text(
+ """SELECT api_keys.user_id, api_keys.owner_id FROM api_keys
  INNER JOIN users ON users.id = api_keys.user_id
  WHERE users.username is NULL;
  """
+ )
  )
  results = res.fetchall()
  # Replace the uploader with the key anonymous user