Drop Python 3.9 official support #380
Description
https://devguide.python.org/versions/#supported-versions
Python 3.9 will by EOL at the end of the month; we ought to drop support in the next release after that.
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https://devguide.python.org/versions/#supported-versions
Python 3.9 will by EOL at the end of the month; we ought to drop support in the next release after that.