chore(deps): bump github.com/cloudevents/sdk-go/v2 from 2.4.1 to 2.15.2 in /ci/pod/openfunction/function-example/test-uri

chore(deps): bump github.com/cloudevents/sdk-go/v2 from 2.4.1 to 2.15.2 in /ci/pod/openfunction/function-example/test-uri #8962