docs: verify webhook signature helper (#3078) #7540

Job	Run time
nango-server-prod / push-container	4m 32s
nango-server-enterprise / push-container	4m 48s
nango-runner / push-container	2m 29s
nango-server-self-hosted / push-container	4m 51s
nango-server-staging / push-container	4m 35s
	21m 15s

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