Bump sqlalchemy from 2.0.52 to 2.0.53

[dependabot]

Bumps sqlalchemy from 2.0.52 to 2.0.53.

Release notes

Sourced from sqlalchemy's releases.

2.0.53

Released: September 14, 2026

orm

• [orm] [bug] Fixed issue where an expression passed to _orm.with_expression() that embedded a _sql.select(), such as a correlated _sql.exists(), would fail to populate the attribute correctly on the second and subsequent executions of an otherwise identical statement, when the _orm.query_expression() attribute was loaded by a relationship loader that emits a second query, i.e. _orm.selectinload(), _orm.lazyload() or _orm.immediateload().

  References: #13560

• [orm] [bug] Fixed memory issue where mapped classes, along with their Table and _orm.Mapper objects, would not be garbage collected after the _orm.registry in which they were mapped had been disposed and dereferenced. The issue would occur for mappings that made use of _orm.relationship() together with constructs such as an Index established against an ORM-annotated expression.

  References: #13566

• [orm] [bug] Fixed issue where pickling an ORM object that had an instance level lazy loader established, such as when the _orm.raiseload() option is used, would emit a spurious warning regarding the loader containing additional criteria, if the object had itself been unpickled from a previous serialization. This would occur for objects that cross more than one serialization boundary, such as when using multiprocessing.

  References: #13574

• [orm] [bug] Fixed issue where calling _orm.aliased() against an existing _orm.aliased() construct, without passing an explicit selectable, would disregard the selectable of the existing construct and produce an alias of the mapped table instead, if that selectable were anything other than a table or a plain subquery, leading to incorrect results and/or non-working queries.

  This includes _orm.aliased() against a _orm.with_polymorphic() construct, which would previously produce an alias of the base mapped class only, discarding the polymorphic selectable and additional mappers. The new construct now retains these, so that criteria against subclass attributes and the innerjoin and selectable parameters of _orm.with_polymorphic() take effect, and subclass columns are loaded up front. The SQL rendered for these constructs now includes the

... (truncated)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.62%. Comparing base (292eb56) to head (0cd23ea).
⚠️ Report is 26 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1018   +/-   ##
=======================================
  Coverage   94.62%   94.62%           
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  Files          11       11           
  Lines         632      632           
  Branches       22       22           
=======================================
  Hits          598      598           
  Misses         26       26           
  Partials        8        8           

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