chore: release 2.3.0

[slo-generator-bot]

:robot: I have created a release *beep* *boop*

2.3.0 (2022-10-23)

Features

• add Cloud Monitoring MQL backend (#245) (159f4d5)
• add Prometheus Self exporter for API mode (#209) (53c0fdf)
• add pytype linting (#249) (b622d09)

Bug Fixes

• add timeFrame to retrieve_slo dynatrace (#212) (2db0140)
• make unit tests pass again with elasticsearch 8.x client (#223) (39dd26c)
• prevent gcloud crash with python 3.10 during release workflow (39a257e)
• remove useless and unknown Pylint options (#247) (5053251)
• support custom exporters (#235) (b72b8f4)

Documentation

• add missing 'method' field in readme (#213) (5d2a9a0)
• add Python 3.9 classifier (#226) (83c36b9)

• document how to write and configure filters in Cloud Monitoring provider (#266) (29ab2e1)

This PR was generated with Release Please.

[ocervell]

🔥

[lvaylet]

@ocervell Do I have to take any action from there? I am not familiar with how the release bot works and how we are supposed to interact with it.

[lvaylet]

Closing this PR as the "improved CI and development workflow" brought by #267 uses a newer version of the release-please GitHub Action and the package version is now stored in setup.cfg (instead of setup.py previously). The release-please bot created #270 to replace this PR.