Bump pymodbus from 3.11.4 to 3.12.0

Bumps [pymodbus](https://github.com/pymodbus-dev/pymodbus) from 3.11.4 to 3.12.0.
- [Release notes](https://github.com/pymodbus-dev/pymodbus/releases)
- [Changelog](https://github.com/pymodbus-dev/pymodbus/blob/dev/CHANGELOG.rst)
- [Commits](pymodbus-dev/pymodbus@v3.11.4...v3.12.0)

---
updated-dependencies:
- dependency-name: pymodbus
  dependency-version: 3.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]