Create dependabot.yml #105

Job	Run time
Check (ubuntu-latest, stable)	29s
Test Suite (ubuntu-latest, stable)	1m 44s
Check (ubuntu-latest, beta)	27s
Test Suite (ubuntu-latest, beta)	1m 52s
Check (ubuntu-latest, nightly)	27s
Test Suite (ubuntu-latest, nightly)	1m 42s
Check (windows-latest, stable)	1m 35s
Check (windows-latest, beta)	51s
Test Suite (windows-latest, stable)	5m 38s
Check (windows-latest, nightly)	58s
Test Suite (windows-latest, beta)	3m 55s
Check (macOS-latest, stable)	24s
Test Suite (windows-latest, nightly)	3m 54s
Check (macOS-latest, beta)	35s
Test Suite (macOS-latest, stable)	1m 26s
Check (macOS-latest, nightly)	43s
Test Suite (macOS-latest, beta)	2m 21s
Test Suite (macOS-latest, nightly)	1m 37s
	30m 38s

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