pkg_resources is soon to be depreciated

[DominicOram]

Description

When trying to import zocalo under python version 3.11 I get a depreciation warning:

ImportError while loading conftest '/scratch/ffv81422/mx_bluesky_hyperion_merge/mx-bluesky/tests/conftest.py'.
tests/conftest.py:18: in <module>
    from dodal.beamlines import i03
../dodal/src/dodal/beamlines/i03.py:41: in <module>
    from dodal.devices.zocalo import ZocaloResults
../dodal/src/dodal/devices/zocalo/__init__.py:1: in <module>
    from dodal.devices.zocalo.zocalo_interaction import ZocaloStartInfo, ZocaloTrigger
../dodal/src/dodal/devices/zocalo/zocalo_interaction.py:7: in <module>
    import zocalo.configuration
.venv/lib/python3.11/site-packages/zocalo/configuration/__init__.py:14: in <module>
    import pkg_resources
.venv/lib/python3.11/site-packages/pkg_resources/__init__.py:105: in <module>
    warnings.warn(
E   DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html

The documentation suggests moving to https://importlib-metadata.readthedocs.io/en/latest/migration.html#pkg-resources-iter-entry-points to fix this