Skip PR checks for events triggered by Dependabot #7869

Job	Run time
Packaging: Config file (windows-latest, linked)	5m 36s
Packaging: Config file (ubuntu-latest, linked)	1m 35s
Packaging: Config file (macos-latest, linked)	1m 53s
Packaging: Config file (macos-latest, default)	1m 45s
Packaging: Config file (ubuntu-latest, default)	1m 42s
Packaging: Config file (windows-latest, default)	12m 6s
Packaging: Config file (ubuntu-latest, nightly-latest)	1m 18s
Packaging: Config file (macos-latest, nightly-latest)	1m 57s
Packaging: Config file (windows-latest, nightly-latest)	3m 24s
	31m 16s

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