deps: update golang.org/x/exp digest to f9890c6 #693

Job	Run time
Prepare CI Run	5s
Store tag of the built images	1s
Unit Tests (lifecycle-operator, lifecycle-operator/)	58s
Build Docker Image (lifecycle-operator, lifecycle-operator/)	1m 0s
Unit Tests (metrics-operator, metrics-operator/)	39s
Build Docker Image (metrics-operator, metrics-operator/)	43s
Unit Tests (scheduler, scheduler/)	57s
Build Docker Image (scheduler, scheduler/)	1m 1s
Build Docker Image (deno-runtime, runtimes/deno-runtime/)	20s
Unit Tests (certificate-operator, keptn-cert-manager/)	57s
Build Docker Image (python-runtime, runtimes/python-runtime/)	17s
Build Docker Image (certificate-operator, keptn-cert-manager/)	1m 0s
Component Tests / Component Tests	44s
Publish helm chart changes to charts repo	0s
End to End Tests	0s
Load Tests	0s
Integration Tests	0s
Performance Tests	0s
	8m 42s

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