fix wheel by bumping STB version

[dlqqq]

Description

See #1253

This PR upgrades the version of STB (build backend used by this project) to the latest release, which includes my PR that fixes the RECORD hashes in built wheels. This will allow Poetry projects to install pydata-sphinx-theme.

Verification

Add this script (validate_wheel.py) to the project root:

import os
from installer.sources import WheelFile

WHEEL_RELPATH = 'dist/pydata_sphinx_theme-0.13.2.dev0-py3-none-any.whl'

wheel_abspath = os.path.join(os.path.dirname(__file__), WHEEL_RELPATH)

with WheelFile.open(wheel_abspath) as source:
    source.validate_record()

Then, build the wheel and verify the script does not except:

$ python -m build
$ python validate_wheel.py

Next steps

Cut a release after this is merged to update the published wheel on PyPi. Then we can close the issue.

[dlqqq]

cc @drammock

[dlqqq]

The new release version should be either 0.13.2 or 0.14.0, depending on what PRs were merged before between 0.13.1 and now.