Enable Ubuntu 22.04 builds #70

Job	Run time
Ubuntu 20.04 (gcc9, 3.8)	10m 12s
Ubuntu 22.04 (gcc11, 3.10)	32s
Ubuntu 18.04 (gcc7, 2.7)	1s
Ubuntu 20.04 (clang10, clang-10, /usr/bin/clang-10, /usr/bin/clang++-10, 3.8)	9m 54s
Ubuntu 22.04 (clang14, clang-14, /usr/bin/clang-14, /usr/bin/clang++-14, 3.10)	35s
Ubuntu 18.04 (gcc8, g++-8, /usr/bin/gcc-8, /usr/bin/g++-8, 3.6 -DPYTHON_EXECUTABLE:FILEPATH=/usr/...	1s
Ubuntu 18.04 (gcc9, g++-9, /usr/bin/gcc-9, /usr/bin/g++-9, 3.6 -DPYTHON_EXECUTABLE:FILEPATH=/usr/...	1s
Ubuntu 18.04 (clang7, clang-7, /usr/bin/clang-7, /usr/bin/clang++-7, 3.6 -DPYTHON_EXECUTABLE:FILE...	1s
Ubuntu 18.04 (clang8, clang-8, /usr/bin/clang-8, /usr/bin/clang++-8, 3.6 -DPYTHON_EXECUTABLE:FILE...	1s
	21m 18s

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