Disable astyle for metatensor code #22

Job	Run time
codecheck / codecheck	43m 59s
docker / docker (fedora39)	20m 57s
conda / conda (ubuntu-20.04)	10m 35s
linux / linux (-doc-mpi-)	39m 2s
docker / docker (rocky8)	23m 34s
mac / macports (macos-12)	13m 48s
conda / conda (macos-12)	22m 5s
linux / linux (-mpi-)	47m 4s
conda / conda (macos-14)	8m 1s
linux / linux (-coverage-mpi-)	1h 1m 23s
mac / macports (macos-14)	8m 59s
linux / linux (-debug-)	30m 27s
mac / macports (+allmodules, macos-12)	40m 48s
mac / macsimple (macos-12)	9m 21s
linux / linux (-debug-mpi-)	40m 5s
mac / macsimple (macos-14)	4m 28s
linux / linux (-intel-)	45m 51s
linux / linux (-pycv-mpi-)	17m 8s
	8h 7m 35s

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