Tweak badges #554

Job	Run time
Test with python 3.6 on windows-latest	1m 53s
Test with python 3.7 on windows-latest	1m 39s
Test with python 3.8 on windows-latest	8m 16s
Test with python 3.12 on windows-latest	10m 11s
Test with python 3.6 on macos-latest	59s
Test with python 3.7 on macos-latest	39s
Test with python 3.8 on macos-latest	3m 31s
Test with python 3.12 on macos-latest	5m 5s
Test with python 2.7 on ubuntu-20.04	31s
Test with python 3.6 on ubuntu-20.04	40s
Test with python 3.7 on ubuntu-latest	32s
Test with python 3.8 on ubuntu-latest	3m 16s
Test with python 3.9 on ubuntu-latest	3m 26s
Test with python 3.10 on ubuntu-latest	3m 32s
Test with python 3.11 on ubuntu-latest	3m 12s
Test with python 3.12 on ubuntu-latest	5m 10s
	52m 32s

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