Update sqlalchemy requirement from ~=2.0.4 to ~=2.0.14

[dependabot]

Updates the requirements on sqlalchemy to permit the latest version.

Release notes

Sourced from sqlalchemy's releases.

2.0.14

Released: May 18, 2023

orm

• [orm] [bug] Modified the JoinedLoader implementation to use a simpler approach in one particular area where it previously used a cached structure that would be shared among threads. The rationale is to avoid a potential race condition which is suspected of being the cause of a particular crash that's been reported multiple times. The cached structure in question is still ultimately "cached" via the compiled SQL cache, so a performance degradation is not anticipated.

  References: #9777

• [orm] [bug] [regression] Fixed regression where use of _dml.update() or _dml.delete() within a _sql.CTE construct, then used in a _sql.select(), would raise a CompileError as a result of ORM related rules for performing ORM-level update/delete statements.

  References: #9767

• [orm] [bug] Fixed issue in new ORM Annotated Declarative where using a _schema.ForeignKey (or other column-level constraint) inside of _orm.mapped_column() which is then copied out to models via pep-593 Annotated would apply duplicates of each constraint to the _schema.Column as produced in the target _schema.Table, leading to incorrect CREATE TABLE DDL as well as migration directives under Alembic.

  References: #9766

• [orm] [bug] Fixed issue where using additional relationship criteria with the _orm.joinedload() loader option, where the additional criteria itself contained correlated subqueries that referred to the joined entities and therefore also required "adaption" to aliased entities, would be excluded from this adaption, producing the wrong ON clause for the joinedload.

  References: #9779

sql

• [sql] [usecase] Generalized the MSSQL _sql.try_cast() function into the sqlalchemy. import namespace so that it may be implemented by third party dialects as well. Within SQLAlchemy, the _sql.try_cast() function remains a SQL Server-only construct that will raise CompileError if used with backends that don't support it.

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[dependabot]

Superseded by #436.