build(deps): bump deps/rapidjson from 68afb49 to 5ec44fb

Bumps [deps/rapidjson](https://github.com/Tencent/rapidjson) from `68afb49` to `5ec44fb`.
- [Release notes](https://github.com/Tencent/rapidjson/releases)
- [Commits](Tencent/rapidjson@68afb49...5ec44fb)

---
updated-dependencies:
- dependency-name: deps/rapidjson
  dependency-type: direct:production
...

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