Move from Pybind11 to nanobind #1153

Job	Run time
[conda:ubuntu-latest:Release:c++17]	21m 17s
[conda:ubuntu-latest:Release:c++20]	22m 42s
[conda:macos-latest:Release:c++17]	30m 57s
[conda:macos-latest:Release:c++20]	30m 32s
[conda:windows-2019:Release:c++17]	27m 55s
[conda:windows-2019:Release:c++20]	27m 0s
[conda:windows-latest:Release:c++17]	29m 31s
[conda:windows-latest:Release:c++20]	26m 54s
[conda:macos-14:Release:c++17]	11m 32s
[conda:macos-14:Release:c++20]	14m 2s
[conda:ubuntu-latest:Debug:c++17]	32m 21s
[conda:ubuntu-latest:Debug:c++20]	30m 26s
[conda:windows-2019:Debug:c++17]	28m 34s
[conda:windows-2019:Debug:c++20]	27m 47s
[conda:windows-latest:Debug:c++17]	22m 37s
[conda:windows-latest:Debug:c++20]	28m 32s
[conda:macos-14:Debug:c++17]	14m 42s
[conda:macos-14:Debug:c++20]	14m 26s
[conda:macos-latest:Debug:c++17]	36m 29s
[conda:macos-latest:Debug:c++20]	37m 56s
check-ci-linux-osx-win-conda	4s
	8h 36m 16s

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