Bump sqlalchemy from 1.4.15 to 1.4.23

[dependabot[bot]]

Bumps sqlalchemy from 1.4.15 to 1.4.23.

Release notes

Sourced from sqlalchemy's releases.

1.4.23

Released: August 18, 2021

general

• [general] [bug] The setup requirements have been modified such greenlet is a default requirement only for those platforms that are well known for greenlet to be installable and for which there is already a pre-built binary on pypi; the current list is x86_64 aarch64 ppc64le amd64 win32. For other platforms, greenlet will not install by default, which should enable installation and test suite running of SQLAlchemy 1.4 on platforms that don't support greenlet, excluding any asyncio features. In order to install with the greenlet dependency included on a machine architecture outside of the above list, the [asyncio] extra may be included by running pip install sqlalchemy[asyncio] which will then attempt to install greenlet.

  Additionally, the test suite has been repaired so that tests can complete fully when greenlet is not installed, with appropriate skips for asyncio-related tests.

  References: #6136

orm

• [orm] [usecase] Added new attribute _sql.Select.columns_clause_froms that will retrieve the FROM list implied by the columns clause of the _sql.Select statement. This differs from the old _sql.Select.froms collection in that it does not perform any ORM compilation steps, which necessarily deannotate the FROM elements and do things like compute joinedloads etc., which makes it not an appropriate candidate for the _sql.Select.select_from() method. Additionally adds a new parameter _sql.Select.with_only_columns.maintain_column_froms that transfers this collection to _sql.Select.select_from() before replacing the columns collection.

  In addition, the _sql.Select.froms is renamed to _sql.Select.get_final_froms(), to stress that this collection is not a simple accessor and is instead calculated given the full state of the object, which can be an expensive call when used in an ORM context.

  Additionally fixes a regression involving the _orm.with_only_columns() function to support applying criteria to column elements that were replaced with either _sql.Select.with_only_columns() or _orm.Query.with_entities() , which had broken as part of #6503 released in 1.4.19.

... (truncated)

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