Merge branch 'master' of github.com:klein0r/ioBroker.luftdaten #338

Job	Run time
check-and-lint	12s
adapter-tests (16.x, ubuntu-latest)	37s
adapter-tests (16.x, windows-latest)	2m 32s
adapter-tests (16.x, macos-latest)	51s
adapter-tests (18.x, ubuntu-latest)	42s
adapter-tests (18.x, windows-latest)	4m 9s
adapter-tests (18.x, macos-latest)	1m 13s
adapter-tests (20.x, ubuntu-latest)	40s
adapter-tests (20.x, windows-latest)	3m 16s
adapter-tests (20.x, macos-latest)	1m 19s
deploy	0s
	15m 31s

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