Bump pyiron-atomistics from 0.6.12 to 0.6.16 #1819

Job	Run time
pyiron / commit-updated-env	8s
pyiron / test-alternate-env	0s
pyiron / build-docs	1m 20s
pyiron / build-notebooks	1m 18s
pyiron / benchmark-tests	1m 12s
pyiron / unit-tests (ubuntu-latest, 3.12)	1s
pyiron / unit-tests (ubuntu-latest, 3.11)	1s
pyiron / black	9s
pyiron / unit-tests (ubuntu-latest, 3.10)	1s
pyiron / unit-tests (windows-latest, 3.12)	2m 2s
pyiron / unit-tests (macos-latest, 3.12)	1m 28s
pyiron / pip-check	1m 13s
pyiron / coveralls-and-codacy / Tests-and-Coverage	1m 6s
	9m 59s

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