Update pluggy to 1.3.0

[pyup-bot]

This PR updates pluggy from 1.2.0 to 1.3.0.

Changelog

1.3.0

=========================

Deprecations and Removals
-------------------------

- `426 <https://github.com/pytest-dev/pluggy/issues/426>`_: Python 3.7 is no longer supported.



Features
--------

- `428 <https://github.com/pytest-dev/pluggy/issues/428>`_: Pluggy now exposes its typings to static type checkers.

As part of this, the following changes are made:

- Renamed ``_Result`` to ``Result``, and exported as :class:`pluggy.Result`.
- Renamed ``_HookRelay`` to ``HookRelay``, and exported as :class:`pluggy.HookRelay`.
- Renamed ``_HookCaller`` to ``HookCaller``, and exported as :class:`pluggy.HookCaller`.
- Exported ``HookImpl`` as :class:`pluggy.HookImpl`.
- Renamed ``_HookImplOpts`` to ``HookimplOpts``, and exported as :class:`pluggy.HookimplOpts`.
- Renamed ``_HookSpecOpts`` to ``HookspecOpts``, and exported as :class:`pluggy.HookspecOpts`.
- Some fields and classes are marked ``Final`` and ``final``.
- The :ref:`api-reference` is updated to clearly delineate pluggy's public API.

Compatibility aliases are put in place for the renamed types.
We do not plan to remove the aliases, but we strongly recommend to only import from ``pluggy.*`` to ensure future compatibility.

Please note that pluggy is currently unable to provide strong typing for hook calls, e.g. ``pm.hook.my_hook(...)``,
nor to statically check that a hook implementation matches the hook specification's type.

Links

• PyPI: https://pypi.org/project/pluggy
• Changelog: https://pyup.io/changelogs/pluggy/
• Repo: https://github.com/pytest-dev/pluggy

[pyup-bot]

Closing this in favor of #334