Drop Python 3.8, add 3.13 #1380

Job	Run time
build-lint-test (3.9, ubuntu-latest)	4h 35m 20s
build-lint-test (3.9, ubuntu-arm)	4h 39m 43s
build-lint-test (3.9, macos-intel)	4h 39m 24s
build-lint-test (3.9, macos-arm)	6h 0m 14s
build-lint-test (3.9, windows-latest)	23m 17s
build-lint-test (3.13, ubuntu-latest)	10m 46s
build-lint-test (3.13, ubuntu-arm)	8m 11s
build-lint-test (3.13, macos-intel)	19m 18s
build-lint-test (3.13, macos-arm)	5m 13s
build-lint-test (3.13, windows-latest)	12m 47s
features-tests / test	5m 51s
	21h 20m 4s

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