Bump sqlalchemy from 1.4.40 to 1.4.42 in /libweasyl

[dependabot[bot]]

Bumps sqlalchemy from 1.4.40 to 1.4.42.

Release notes

Sourced from sqlalchemy's releases.

1.4.42

Released: October 16, 2022

orm

• [orm] [bug] The _orm.Session.execute.bind_arguments dictionary is no longer mutated when passed to _orm.Session.execute() and similar; instead, it's copied to an internal dictionary for state changes. Among other things, this fixes and issue where the "clause" passed to the _orm.Session.get_bind() method would be incorrectly referring to the _sql.Select construct used for the "fetch" synchronization strategy, when the actual query being emitted was a _dml.Delete or _dml.Update. This would interfere with recipes for "routing sessions".

  References: #8614

• [orm] [bug] A warning is emitted in ORM configurations when an explicit _orm.remote() annotation is applied to columns that are local to the immediate mapped class, when the referenced class does not include any of the same table columns. Ideally this would raise an error at some point as it's not correct from a mapping point of view.

  References: #7094

• [orm] [bug] A warning is emitted when attempting to configure a mapped class within an inheritance hierarchy where the mapper is not given any polymorphic identity, however there is a polymorphic discriminator column assigned. Such classes should be abstract if they never intend to load directly.

  References: #7545

• [orm] [bug] [regression] Fixed regression for 1.4 in _orm.contains_eager() where the "wrap in subquery" logic of _orm.joinedload() would be inadvertently triggered for use of the _orm.contains_eager() function with similar statements (e.g. those that use distinct(), limit() or offset()), which would then lead to secondary issues with queries that used some combinations of SQL label names and aliasing. This "wrapping" is not appropriate for _orm.contains_eager() which has always had the contract that the user-defined SQL statement is unmodified with the exception of adding the appropriate columns to be fetched.

  References: #8569

• [orm] [bug] [regression] Fixed regression where using ORM update() with synchronize_session='fetch' would fail due to the use of evaluators that are now used to determine the in-Python value for expressions in the the SET clause when refreshing objects; if the evaluators make use of math operators against non-numeric

... (truncated)

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[codecov[bot]]

Codecov Report

Merging #1266 (dafca07) into main (7b5227b) will increase coverage by 1.76%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1266      +/-   ##
==========================================
+ Coverage   60.04%   61.81%   +1.76%     
==========================================
  Files          94       79      -15     
  Lines        8873     7497    -1376     
  Branches     1681     1312     -369     
==========================================
- Hits         5328     4634     -694     
+ Misses       3111     2482     -629     
+ Partials      434      381      -53     

Impacted Files	Coverage Δ
libweasyl/libweasyl/media.py	86.66% <0.00%> (-6.20%)	:arrow_down:
weasyl/http.py
weasyl/error.py
weasyl/message.py
weasyl/embed.py
weasyl/sessions.py
weasyl/search.py
weasyl/image.py
weasyl/index.py
weasyl/config.py
... and 8 more

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[dependabot[bot]]

Superseded by #1274.