build(deps): bump third_party/yaml-cpp from `d45c4fb` to `73ef006` (#2479)

Bumps [third_party/yaml-cpp](https://github.com/jbeder/yaml-cpp) from `d45c4fb` to `73ef006`.
- [Release notes](https://github.com/jbeder/yaml-cpp/releases)
- [Commits](https://github.com/jbeder/yaml-cpp/compare/d45c4fba3eccb318441ceeccca67345b0dd21a80...73ef0060aaa1a9dc742c1d8a36fa336b35e94035)

---
updated-dependencies:
- dependency-name: third_party/yaml-cpp
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/third_party/yaml-cpp b/third_party/yaml-cpp
index d45c4fb..73ef006 160000
--- a/third_party/yaml-cpp
+++ b/third_party/yaml-cpp
@@ -1 +1 @@
-Subproject commit d45c4fba3eccb318441ceeccca67345b0dd21a80
+Subproject commit 73ef0060aaa1a9dc742c1d8a36fa336b35e94035