Reduce number of test indices by ~half, and don't iterate entire rang… #95

Job	Run time
test_on_EOL_Pythons (3.8)	45s
test_on_EOL_Pythons (2.7)	47s
pre-commit	13s
test_on_EOL_Pythons (3.6)	48s
pylint	15s
test_on_EOL_Pythons (3.7)	45s
test_on_supported_Pythons (3.9, windows-latest)	59s
test_on_supported_Pythons (3.10, ubuntu-24.04)	34s
test_on_supported_Pythons (3.11, macos-latest)	29s
test_on_supported_Pythons (3.11, ubuntu-24.04)	28s
test_on_supported_Pythons (3.10, windows-latest)	42s
test_on_supported_Pythons (3.12, macos-latest)	35s
test_on_supported_Pythons (3.10, macos-latest)	46s
test_on_supported_Pythons (3.12, windows-latest)	50s
test_on_supported_Pythons (3.13, ubuntu-24.04)	33s
test_on_supported_Pythons (3.11, windows-latest)	43s
test_on_supported_Pythons (3.14.0-beta.4, ubuntu-24.04)	40s
test_on_supported_Pythons (3.9, macos-latest)	46s
test_on_supported_Pythons (3.14.0-beta.4, macos-latest)	47s
test_on_supported_Pythons (3.14.0-beta.4, windows-latest)	1m 51s
test_on_supported_Pythons (3.13, macos-latest)	38s
test_on_supported_Pythons (3.13, windows-latest)	55s
test_on_supported_Pythons (3.12, ubuntu-24.04)	36s
test_on_EOL_Pythons (3.5)	42s
test_on_supported_Pythons (3.9, ubuntu-24.04)	32s
	17m 39s

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