nix

Migrate to Conan 2.x #4431

Job	Run time
dependencies (linux, gcc, Debug)	8m 33s
dependencies (linux, gcc, Release)	8m 0s
dependencies (linux, clang, Debug)	7m 50s
dependencies (linux, clang, Release)	8m 30s
conan	8m 17s
test (linux, gcc, Debug)	16m 36s
coverage (linux, gcc, Debug)	18m 50s
test (linux, gcc, Debug, -Dunity=ON)	13m 53s
test (linux, gcc, Release)	17m 38s
test (linux, gcc, Release, -Dunity=ON)	14m 36s
test (linux, clang, Debug)	14m 50s
test (linux, clang, Debug, -Dunity=ON)	12m 4s
test (linux, clang, Release)	17m 12s
test (linux, clang, Release, -Dunity=ON)	14m 27s
	3h 1m 16s

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