add copyright note #893

Job	Run time
build (ubuntu-latest, 3.9, 8.1)	7m 12s
fossa-scan / Run fossa scan on repository	35s
build (ubuntu-latest, 3.9, latest)	10m 51s
build (ubuntu-latest, 3.13, 8.1)	7m 14s
build (ubuntu-22.04, 3.7, latest)	11m 15s
build (ubuntu-22.04, 3.7, 8.2)	7m 24s
build (ubuntu-latest, 3.9, 8.2)	7m 20s
build (ubuntu-latest, 3.13, 8.2)	7m 22s
build (ubuntu-22.04, 3.7, 8.1)	7m 19s
build (ubuntu-latest, 3.13, latest)	12m 50s
fossa-scan / Fetch fossa results	1m 9s
	1h 20m 31s

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