Update dependency peewee to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
peewee (changelog)	~3.19.0 → ~4.0.0

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Release Notes

coleifer/peewee (peewee)

v4.0.4

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• Fix SQL generation for partial indexes with nulls (not) distinct clause.
• Raise an ImproperlyConfigured if pg driver unavailable at model
  definition-time when field db-hooks are used, rather than AttributeError.

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v4.0.3

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• Refactor test suite - this was a mechanical refactor, just moving things
  around and trying to group things more clearly. Also added new tests covering
  some gaps.
• Expand multi-value types to include generator expressions, so you can write
  stuff like .in(a for a in iterable if cond).
• Ensure quotes embedded in entity names are escaped.
• Improved specification of FOR UPDATE clauses.
• Fix for negative values in paginate() method.
• Fix for newer MySQL server versions in feature detection code.
• More robust handling of unusual aliases / invalid attr names in cursor
  wrapper.
• Better handling of duplicated column names in cursor wrapper implementations.
• Improve performance of ModelCursorWrapper when reconstructing model instance
  graphs after multi-table selects.
• If only psycopg3 is installed, use it by default (#​3036)

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v4.0.2

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• Remove all Python 2.x compatibility code.
• Add streaming result cursors to pwasyncio module via db.iterate(query).
• Better serialization and deserialization of datetimes and binary data in the
  DataSet module. Previously binary data was encoded as base64, going forward
  hex is the new default. For base64 specify base64_bytes=True.
• Improvements to Postgres BinaryJSONField, support atomic removal of
  sub-elements, as well as alternate helper for extracting sub-elements and
  querying array length.
• Pydantic integration

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v4.0.1

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• Ensure gr_context is set on greenlet in greenlet_spawn so that
  contextvars will be operable in sync handlers.
• Removed SqliteExtDatabase (it basically served no purpose in 4.0). Use
  SqliteDatabase instead.
• Moved driver and extension-specific pooled implementations into the
  corresponding extension module rather than putting all into playhouse.pool.
• Restore custom dumps option for postgres JSON fields.
• Major docs rewrite / reorganization.

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v4.0.0

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• Adds preliminary support for asyncio via a new playhouse extension. See
  the documentation
  for details.
• PostgresqlDatabase can use psycopg (psycopg3) if it is installed. If both
  psycopg2 and psycopg3 are installed, Peewee will prefer psycopg2, but this
  can be controlled by specifying prefer_psycopg3=True in the constructor.
  Same applies to PostgresqlExtDatabase.
• Psycopg3Database class has been moved to playhouse.postgres_ext and is
  now just a thin wrapper around PostgresqlExtDatabase.
• Postgres JSON operations no longer dump and try to do minimal casts, instead
  relying on the driver-provided Json() wrapper(s).
• Adds new ISODateTimeField for Sqlite that encodes datetimes in ISO format
  (more friendly when db is shared with other tools), and also properly reads
  back UTC offset info.
• Remove playhouse.sqlite_ext.ClosureTable implementation.
• Add a Model.dirty_field_names attribute that is safe for membership
  testing, since testing x in dirty_fields returns True if one or more field
  exists due to operator overloads returning a truthy Expression object.
  Refs #​3028.
• Removal of Cython _sqlite_ext extension. The C implementations of the FTS
  rank functions are moved to sqlite_udf. Most of the remaining functionality
  is moved to playhouse.cysqlite_ext which supports it natively.

Migrating CSqliteExtDatabase usage:

You can either use sqlite_ext.SqliteExtDatabase or try the new
cysqlite_ext.CySqliteDatabase if you want all the old functionality and are
willing to try a new driver.

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