maint(deps): bump @opentelemetry/context-zone from 1.27.0 to 1.28.0 in /packages/honeycomb-opentelemetry-web/examples/hello-world-custom-exporter in the example-deps group

maint(deps): bump @opentelemetry/context-zone from 1.27.0 to 1.28.0 in /packages/honeycomb-opentelemetry-web/examples/hello-world-custom-exporter in the example-deps group #364