Move from Pybind11 to nanobind #1150

Job	Run time
[conda:ubuntu-latest:Release:c++17]	4m 17s
[conda:ubuntu-latest:Release:c++20]	4m 35s
[conda:macos-latest:Release:c++17]	16m 13s
[conda:macos-latest:Release:c++20]	16m 10s
[conda:windows-2019:Release:c++17]	29m 26s
[conda:windows-2019:Release:c++20]	25m 39s
[conda:windows-latest:Release:c++17]	27m 15s
[conda:windows-latest:Release:c++20]	23m 57s
[conda:macos-14:Release:c++17]	4m 27s
[conda:macos-14:Release:c++20]	4m 34s
[conda:ubuntu-latest:Debug:c++17]	4m 47s
[conda:ubuntu-latest:Debug:c++20]	5m 23s
[conda:windows-2019:Debug:c++17]	24m 16s
[conda:windows-2019:Debug:c++20]	28m 16s
[conda:windows-latest:Debug:c++17]	23m 48s
[conda:windows-latest:Debug:c++20]	25m 5s
[conda:macos-14:Debug:c++17]	4m 33s
[conda:macos-14:Debug:c++20]	5m 22s
[conda:macos-latest:Debug:c++17]	15m 27s
[conda:macos-latest:Debug:c++20]	18m 3s
check-ci-linux-osx-win-conda	2s
	5h 11m 35s

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