Use netCDF-c v4.9.3 #326

Job	Run time
test apt (stable)	41s
static builds (ubuntu-latest, stable)	1m 20s
test apt (beta)	44s
conda (ubuntu, conda-forge, stable)	58s
test apt (nightly)	44s
static builds (windows-latest, stable-msvc)	4m 25s
Address sanitizer	1m 24s
conda (windows, conda-forge, stable)	2m 25s
static builds (windows-latest, stable-gnu)	5m 43s
conda (macos, conda-forge, stable)	1m 9s
static builds (macos-12, stable)	3m 42s
mpi-runner	1m 29s
static builds (macos-latest, stable)	1m 52s
rustfmt	41s
	27m 17s

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