Specify README Encoding in setup.py #480

Job	Run time
test-on-ubuntu (ubuntu-20.04, 3.8, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	40m 33s
test-on-ubuntu (ubuntu-20.04, 3.9, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	36m 22s
test-on-ubuntu (ubuntu-20.04, 3.10, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	34m 49s
test-on-ubuntu (ubuntu-20.04, 3.11, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	31m 53s
test-on-ubuntu (ubuntu-20.04, 3.12, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	33m 54s
test-on-ubuntu (ubuntu-22.04, 3.8, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	36m 0s
test-on-ubuntu (ubuntu-22.04, 3.9, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	36m 4s
test-on-ubuntu (ubuntu-22.04, 3.10, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	33m 57s
test-on-ubuntu (ubuntu-22.04, 3.11, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	32m 18s
test-on-ubuntu (ubuntu-22.04, 3.12, gcc-11, g++-11, g++-11, "ppa:ubuntu-toolchain-r/test", OFF)	33m 26s
test-on-ubuntu (ubuntu-20.04, 3.8, gcc-5, g++-5, g++-5, "deb http://us.archive.ubuntu.com/ubuntu/...	33m 17s
test-on-ubuntu (ubuntu-20.04, 3.8, clang-7, clang++-7, clang-7, ON)	35m 15s
test-on-ubuntu (ubuntu-22.04, 3.10, clang-15, clang++-15, clang-15, OFF)	37m 24s
	7h 35m 12s

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