Upgrade yaml-cpp to remove warning (#7825)

3rdparty/yaml-cpp/src/nodebuilder.cpp

@@ -1,4 +1,3 @@
-#include <assert.h>
 #include <cassert>
 
 #include "nodebuilder.h"
@@ -11,11 +10,16 @@ namespace YAML {
 struct Mark;
 
 NodeBuilder::NodeBuilder()
-    : m_pMemory(new detail::memory_holder), m_pRoot(0), m_mapDepth(0) {
-  m_anchors.push_back(0);  // since the anchors start at 1
+    : m_pMemory(new detail::memory_holder),
+      m_pRoot(nullptr),
+      m_stack{},
+      m_anchors{},
+      m_keys{},
+      m_mapDepth(0) {
+  m_anchors.push_back(nullptr);  // since the anchors start at 1
 }
 
-NodeBuilder::~NodeBuilder() {}
+NodeBuilder::~NodeBuilder() = default;
 
 Node NodeBuilder::Root() {
   if (!m_pRoot)
@@ -88,7 +92,7 @@ void NodeBuilder::Push(detail::node& node) {
 
   m_stack.push_back(&node);
   if (needsKey)
-    m_keys.push_back(PushedKey(&node, false));
+    m_keys.emplace_back(&node, false);
 }
 
 void NodeBuilder::Pop() {
@@ -127,4 +131,4 @@ void NodeBuilder::RegisterAnchor(anchor_t anchor, detail::node& node) {
     m_anchors.push_back(&node);
   }
 }
-}
+}  // namespace YAML