Bumps the actions group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

Updates `pypa/cibuildwheel` from 3.2.1 to 3.3.0
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@v3.2.1...v3.3.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: pypa/cibuildwheel
  dependency-version: 3.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Runners closing down in Gitlab Action.

Bumps the actions group with 2 updates: [actions/cache](https://github.com/actions/cache) and [actions/upload-artifact](https://github.com/actions/upload-artifact).


Updates `actions/cache` from 4 to 5
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

Updates `actions/upload-artifact` from 5 to 6
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Much better, thank you!

When multiple connection attempts fail, a new OperationalError with the
combined attempt errors is raised without retaining the pgconn attribute
of the original attempt errors.  Fix this by assigning the pgconn from
the last attempt error.

fix: retain pgconn on OperationalError

This PR adds critical sections to the PGconn class so that
race condition between calling into the libpq bindings and
calling `close` which sets the `_pgconn_ptr` to NULL are
eliminated.

Also add one high-level and one low-level tests that trigger TSAN
warnings without this PR.

Use critical section to protect pgconn ptr

Bumps the actions group with 1 update: [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel).


Updates `pypa/cibuildwheel` from 3.3.0 to 3.3.1
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@v3.3.0...v3.3.1)

---
updated-dependencies:
- dependency-name: pypa/cibuildwheel
  dependency-version: 3.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

- Fix error message in _tstrings.py: reference nonexistent "sql.Composite"
  corrected to "sql.Composable" (the actual base class)
- Fix docs/api/sql.rst: remove incorrect escape_identifier() example that
  passed a str where bytes is required (closes #421)
- Fix typo "re-exoprts" -> "re-exports" in conninfo.py

Co-Authored-By: Claude Opus 4.6

Note: this MR is AI slop which has been pushed by the author without
even considering if it was correct. Corrected by a human being in the
next commit on this branch.

Close #1256.

…-improvements

Fix typo in tstrings error message and incorrect escape_identifier docs example

Close #1258

When using prepared statements, psycopg sends Parse+Sync via
PQsendPrepare and assumes libpq returns exactly one PGresult.
However, the PostgreSQL wire protocol allows ErrorResponse during
Sync processing (e.g., when an implicit transaction commit fails).
In this case, libpq returns two PGresult objects — one for the
successful ParseComplete and one for the ErrorResponse — causing
a ValueError: "too many values to unpack (expected 1)".

This commit handles multiple results from PQsendPrepare by
iterating over all returned results and checking each for errors,
consistent with how the non-prepare execute path already works.

Fix ValueError when server sends ErrorResponse during Sync after Parse