Move from Pybind11 to nanobind #1145

Job	Run time
[conda:ubuntu-latest:Release:c++17]	4m 34s
[conda:ubuntu-latest:Release:c++20]	4m 23s
[conda:macos-latest:Release:c++17]	16m 53s
[conda:macos-latest:Release:c++20]	15m 4s
[conda:windows-2019:Release:c++17]	25m 33s
[conda:windows-2019:Release:c++20]	24m 30s
[conda:windows-latest:Release:c++17]	31m 14s
[conda:windows-latest:Release:c++20]	23m 41s
[conda:macos-14:Release:c++17]	5m 1s
[conda:macos-14:Release:c++20]	5m 11s
[conda:ubuntu-latest:Debug:c++17]	4m 56s
[conda:ubuntu-latest:Debug:c++20]	5m 5s
[conda:windows-2019:Debug:c++17]	24m 13s
[conda:windows-2019:Debug:c++20]	26m 4s
[conda:windows-latest:Debug:c++17]	22m 2s
[conda:windows-latest:Debug:c++20]	25m 53s
[conda:macos-14:Debug:c++17]	4m 41s
[conda:macos-14:Debug:c++20]	5m 21s
[conda:macos-latest:Debug:c++17]	14m 57s
[conda:macos-latest:Debug:c++20]	17m 36s
check-ci-linux-osx-win-conda	4s
	5h 6m 56s

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