Bump sqlalchemy from 2.0.12 to 2.0.15

[dependabot]

Bumps sqlalchemy from 2.0.12 to 2.0.15.

Release notes

Sourced from sqlalchemy's releases.

2.0.15

Released: May 19, 2023

orm

• [orm] [bug] As more projects are using new-style "2.0" ORM querying, it's becoming apparent that the conditional nature of "autoflush", being based on whether or not the given statement refers to ORM entities, is becoming more of a key behavior. Up until now, the "ORM" flag for a statement has been loosely based around whether or not the statement returns rows that correspond to ORM entities or columns; the original purpose of the "ORM" flag was to enable ORM-entity fetching rules which apply post-processing to Core result sets as well as ORM loader strategies to the statement. For statements that don't build on rows that contain ORM entities, the "ORM" flag was considered to be mostly unnecessary.

  It still may be the case that "autoflush" would be better taking effect for all usage of _orm.Session.execute() and related methods, even for purely Core SQL constructs. However, this still could impact legacy cases where this is not expected and may be more of a 2.1 thing. For now however, the rules for the "ORM-flag" have been opened up so that a statement that includes ORM entities or attributes anywhere within, including in the WHERE / ORDER BY / GROUP BY clause alone, within scalar subqueries, etc. will enable this flag. This will cause "autoflush" to occur for such statements and also be visible via the _orm.ORMExecuteState.is_orm_statement event-level attribute.

  References: #9805

postgresql

• [postgresql] [bug] [regression] Repaired the base Uuid datatype for the PostgreSQL dialect to make full use of the PG-specific UUID dialect-specific datatype when "native_uuid" is selected, so that PG driver behaviors are included. This issue became apparent due to the insertmanyvalues improvement made as part of #9618, where in a similar manner as that of #9739, the asyncpg driver is very sensitive to datatype casts being present or not, and the PostgreSQL driver-specific native UUID datatype must be invoked when this generic type is used so that these casts take place.

  References: #9808

2.0.14

Released: May 18, 2023

orm

... (truncated)

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