build(deps): bump third_party/yaml-cpp from b95aa14 to b11eaf1

Bumps [third_party/yaml-cpp](https://github.com/jbeder/yaml-cpp) from `b95aa14` to `b11eaf1`.
- [Release notes](https://github.com/jbeder/yaml-cpp/releases)
- [Commits](jbeder/yaml-cpp@b95aa14...b11eaf1)

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

Signed-off-by: dependabot[bot] <[email protected]>