chore: prepare next release (#5274)

CHANGELOG.md

examples/esm-http-ts/package.json

examples/http/package.json

examples/https/package.json

examples/opentelemetry-web/package.json

examples/otlp-exporter-node/package.json

experimental/CHANGELOG.md

experimental/backwards-compatibility/node14/package.json

experimental/backwards-compatibility/node16/package.json

experimental/examples/events/package.json

experimental/examples/logs/package.json

experimental/examples/opencensus-shim/package.json

experimental/examples/prometheus/package.json

experimental/packages/api-events/package.json

experimental/packages/api-logs/package.json

experimental/packages/exporter-logs-otlp-grpc/package.json

experimental/packages/exporter-logs-otlp-http/package.json

experimental/packages/exporter-logs-otlp-proto/package.json

experimental/packages/exporter-trace-otlp-grpc/package.json

experimental/packages/exporter-trace-otlp-http/package.json