Drop Python 3.8, add 3.13 #1359

Job	Run time
build-lint-test (3.9, ubuntu-latest)	4h 26m 49s
build-lint-test (3.9, ubuntu-arm)	4h 29m 35s
build-lint-test (3.9, macos-intel)	8m 20s
build-lint-test (3.9, macos-arm)	5m 19s
build-lint-test (3.9, windows-latest)	21m 25s
build-lint-test (3.13, ubuntu-latest)	9m 59s
build-lint-test (3.13, ubuntu-arm)	7m 32s
build-lint-test (3.13, macos-intel)	15m 16s
build-lint-test (3.13, macos-arm)	5m 23s
build-lint-test (3.13, windows-latest)	16m 0s
features-tests / test	6m 4s
	10h 31m 42s

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