chore(deps): bump @opentelemetry/core from 1.4.0 to 2.8.0 in /experimental/packages/opentelemetry-exporter-metrics-otlp-http

chore(deps): bump @opentelemetry/core from 1.4.0 to 2.8.0 in /experimental/packages/opentelemetry-exporter-metrics-otlp-http #10