build(deps): update psycopg[binary] requirement from ~=3.1.19 to ~=3.2.1 in /samples/python/psycopg3

[dependabot]

Updates the requirements on psycopg[binary] to permit the latest version.

Changelog

Sourced from psycopg[binary]'s changelog.

.. currentmodule:: psycopg

.. index:: single: Release notes single: News

psycopg release notes

Current release

Psycopg 3.2.1 ^^^^^^^^^^^^^

• Fix packaging metadata breaking [c], [binary] dependencies (:ticket:[#853](https://github.com/psycopg/psycopg/issues/853)).

Psycopg 3.2

.. rubric:: New top-level features

• Add support for integer, floating point, boolean NumPy scalar types__ (:ticket:[#332](https://github.com/psycopg/psycopg/issues/332)).
• Add !timeout and !stop_after parameters to Connection.notifies() (:ticket:340).
• Allow dumpers to return !None, to be converted to NULL (:ticket:[#377](https://github.com/psycopg/psycopg/issues/377)).
• Add :ref:raw-query-cursors to execute queries using placeholders in PostgreSQL format ($1, $2...) (:tickets:[#560](https://github.com/psycopg/psycopg/issues/560), [#839](https://github.com/psycopg/psycopg/issues/839)).
• Add capabilities object to :ref:inspect the libpq capabilities <capabilities> (:ticket:[#772](https://github.com/psycopg/psycopg/issues/772)).
• Add ~rows.scalar_row to return scalar values from a query (:ticket:[#723](https://github.com/psycopg/psycopg/issues/723)).
• Add ~Connection.cancel_safe() for encrypted and non-blocking cancellation when using libpq v17. Use such method internally to implement !KeyboardInterrupt and ~cursor.copy termination (:ticket:[#754](https://github.com/psycopg/psycopg/issues/754)).
• The !context parameter of sql objects ~sql.Composable.as_string() and ~sql.Composable.as_bytes() methods is now optional (:ticket:[#716](https://github.com/psycopg/psycopg/issues/716)).
• Add ~Connection.set_autocommit() on sync connections, and similar transaction control methods available on the async connections.
• Add a size parameter to ~Cursor.stream() to enable results retrieval in chunks instead of row-by-row (:ticket:[#794](https://github.com/psycopg/psycopg/issues/794)).

.. rubric:: New libpq wrapper features

• Add support for libpq functions to close prepared statements and portals introduced in libpq v17 (:ticket:[#603](https://github.com/psycopg/psycopg/issues/603)).
• Add support for libpq encrypted and non-blocking query cancellation functions introduced in libpq v17 (:ticket:[#754](https://github.com/psycopg/psycopg/issues/754)).

... (truncated)

Commits

• bb47d39 chore: bump psycopg package version to 3.2.1
• 55490a2 fix: fix versions in packaging metadata
• 1cbc42a docs: fix title level of major releases
• 06a6e5e docs: mention dropping Python 3.7 in psycopg 3.2 release
• ea3735d docs: better organization of the 3.2 release notes
• 896eee2 chore: bump psycopg package version to 3.2.0
• 2e2f4d7 chore: bump psycopg package version to 3.1.20
• 7369d3b Merge pull request #846 from eli-schwartz/tomllib
• 6672c70 style: shorter line in pyproject.toml
• a517bb4 build: avoid installing tomli on recent python
• Additional commits viewable in compare view

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