CI,DOC: Build API documentation #297

Job	Run time
build (Debug, yes, 3.12, yes, ubuntu-20.04, gcc)	3m 43s
build (Debug, yes, 3.11, yes, ubuntu-20.04, gcc)	4m 25s
build (Debug, yes, 3.10, yes, ubuntu-20.04, gcc)	3m 55s
build (Debug, yes, 3.9, yes, ubuntu-20.04, gcc)	3m 55s
build (Release, 3.8, yes, ubuntu-20.04, gcc)	4m 43s
build (Release, 3.8, yes, gmpxx, no, ubuntu-20.04, gcc)	5m 7s
build (Release, 3.8, yes, ubuntu-20.04, gcc)	5m 0s
build (Release, yes, 3.8, ubuntu-20.04, gcc)	5m 19s
build (Release, 3.9, yes, ubuntu-20.04, gcc)	4m 51s
build (Release, 3.9, yes, flint, yes, ubuntu-20.04, gcc)	5m 24s
build (Debug, 3.8, yes, yes, ubuntu-20.04, clang)	4m 18s
build (Release, 3.8, yes, ubuntu-20.04, clang)	4m 15s
build (Debug, 3.10, yes, 14, yes, boostmp, -k "not integer_nthroot", ubuntu-22.04, deb http://apt...	5m 59s
build (Debug, 3.8, yes, 5, macos-latest, clang)	10m 30s
build (Release, 3.9, no, macos-latest, clang)	7m 27s
build (Debug, 3.8, no, macos-latest, gcc)	6m 41s
build (Release, 3.8, macos-latest, gcc)	13m 36s
build (Release, 3.8, ubuntu-20.04, yes, yes, yes, yes, yes, flint, yes, gcc)	5m 5s
	1h 44m 13s

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