⬆️ Bump libs/pybind11 from `5891867` to `0a756c0` #1942

Job	Run time
macos-11 with g++-11 (Debug mode)	18m 38s
macos-11 with g++-11 (Release mode)	19m 9s
macos-11 with g++-12 (Debug mode)	26m 56s
macos-11 with g++-12 (Release mode)	19m 48s
macos-11 with clang++ (Debug mode)	12m 14s
macos-11 with clang++ (Release mode)	17m 12s
macos-12 with g++-11 (Debug mode)	21m 37s
macos-12 with g++-11 (Release mode)	16m 42s
macos-12 with g++-12 (Debug mode)	20m 23s
macos-12 with g++-12 (Release mode)	23m 23s
macos-12 with clang++ (Debug mode)	15m 38s
macos-12 with clang++ (Release mode)	22m 13s
macos-11 with g++-10 (Debug mode)	17m 41s
macos-11 with g++-10 (Release mode)	22m 20s
	4h 33m 54s

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