Remove dependabot config for release 0.14 #806

Job	Run time
Clean up generated files	45s
Images	1m 43s
Clean up clusters	1m 35s
Build multi-arch images	2m 34s
Clusters	1m 40s
Compilation	39s
E2E	2m 54s
Deployment (operator)	2m 33s
Multiple gateways support	1m 32s
Deployment (helm)	2m 8s
Post mortem	2m 6s
Unit tests	1m 31s
Deployment (globalnet, operator)	2m 36s
Deployment (globalnet, helm)	2m 12s
Deployment (air-gap)	3m 8s
Deployment (air-gap, globalnet)	3m 2s
Deployment (air-gap, lighthouse)	3m 17s
Deployment (air-gap, ovn)	6m 10s
Deployment (dual-stack)	2m 36s
Deployment (ovn)	6m 25s
Deployment (ovn-ic)	5m 49s
Deployment (operator, lighthouse)	2m 33s
Deployment (helm, lighthouse)	2m 22s
Deployment (load-balancer)	3m 4s
Deployment (prometheus)	2m 41s
	1h 7m 35s

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