nix

Migrate to Conan 2.x #4434

Job	Run time
dependencies (linux, gcc, Debug)	8m 48s
dependencies (linux, gcc, Release)	8m 17s
dependencies (linux, clang, Debug)	7m 56s
dependencies (linux, clang, Release)	8m 0s
test (linux, gcc, Debug)	16m 46s
coverage (linux, gcc, Debug)	18m 56s
conan	8m 2s
test (linux, gcc, Debug, -Dunity=ON)	13m 27s
test (linux, gcc, Release)	17m 56s
test (linux, gcc, Release, -Dunity=ON)	14m 36s
test (linux, clang, Debug)	14m 22s
test (linux, clang, Debug, -Dunity=ON)	12m 6s
test (linux, clang, Release)	17m 2s
test (linux, clang, Release, -Dunity=ON)	14m 48s
	3h 1m 2s

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