update lightstep library (#3573)
update lightstep library (#3573)

Signed-off-by: Lita Cho <53c7312eb9f02149a2ed58fc14d78d4142caa3c0@lyft.com>
envoyproxy/envoy,envoyproxy/envoy,dnoe/envoy,eklitzke/envoy,envoyproxy/envoy,eklitzke/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,lizan/envoy,lyft/envoy,lizan/envoy,jrajahalme/envoy,dnoe/envoy,istio/envoy,eklitzke/envoy,jrajahalme/envoy,envoyproxy/envoy,lizan/envoy,lyft/envoy,dnoe/envoy,istio/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,dnoe/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy-wasm,lyft/envoy,istio/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy,istio/envoy,eklitzke/envoy,lyft/envoy,eklitzke/envoy,jrajahalme/envoy,envoyproxy/envoy,dnoe/envoy,lizan/envoy,jrajahalme/envoy,lizan/envoy,lizan/envoy,istio/envoy,envoyproxy/envoy,jrajahalme/envoy,lyft/envoy,istio/envoy,lyft/envoy,jrajahalme/envoy