chore: add cooldown interval to dependabot configuration (#4854) #2365

Job	Run time
Verify packer (ubuntu-focal)	11s
Verify packer (windows-core-2019)	13s
Verify packer (windows-core-2022)	9s
Verify packer (ubuntu-jammy-arm64)	14s
Verify packer (linux-al2023)	12s
Verify packer (ubuntu-jammy)	11s
	1m 10s

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