- Bumped openwisp-users~=1.2.0a
- Bumped openwisp-utisl~=1.2.0a
- Bumped openwisp-monitoring~=1.2.0a

- Set max_length attribute of called_station_id to 253 according to best practices
- Ensured serializers enforce this constraint in the API to avoid uncaught exceptions

Fixes #467

Bumps [pypa/gh-action-pypi-publish](https://github.com/pypa/gh-action-pypi-publish) from 1.11.0 to 1.12.4.
- [Release notes](https://github.com/pypa/gh-action-pypi-publish/releases)
- [Commits](pypa/gh-action-pypi-publish@v1.11.0...v1.12.4)

---
updated-dependencies:
- dependency-name: pypa/gh-action-pypi-publish
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

This change ensures proper handling of both UTF-8 and UTF-16 encoded CSV files.

Fixes #550

---------

Co-authored-by: Federico Capoano <f.capoano@openwisp.io>

Previously, the queries performed datetime interpolation at the database level,
which prevented the database from efficiently using indexes. This change ensures
that filters use UTC datetime objects directly, allowing the database to leverage
indexes for improved query performance.

Fixed also the target_url for "Today's RADIUS Session" chart.