Use netCDF-c v4.9.3 #376

Job	Run time
Address sanitizer	1m 31s
rustfmt	39s
mpi-runner	1m 26s
conda (ubuntu, conda-forge, stable)	1m 3s
conda (windows, conda-forge, stable)	2m 16s
test apt (stable)	35s
Spell checking (typos)	4s
conda (macos, conda-forge, stable)	1m 16s
static builds (ubuntu-latest, stable)	1m 15s
test apt (beta)	44s
static builds (windows-latest, stable-msvc)	8m 3s
test apt (nightly)	40s
static builds (windows-latest, stable-gnu)	4m 59s
static builds (macos-13, stable)	3m 54s
static builds (macos-latest, stable)	1m 34s
	29m 59s

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