deps: update yaml-cpp to latest master (#17489)
deps: update yaml-cpp to latest master (#17489)

Signed-off-by: Snow Pettersen <18824beaba694b0802bee531b635db27ba08e6bb@lyft.com>
envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,lyft/envoy