ci: Add Dependabot version-update cooldown #1982

Job	Run time
contract-tests-curl	4m 33s
build-test-server-mac-curl	6m 1s
build-test-server-curl	9m 15s
build-test-server	8m 54s
build-test-server-mac	4m 52s
contract-tests	4m 29s
build-test-server-windows	20m 49s
build-test-server-windows-curl	18m 32s
	1h 17m 25s

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