chore(deps): bump libcore from f993a57 to 6c713e8

Bumps [libcore](https://github.com/hiddify/hiddify-next-core) from `f993a57` to `6c713e8`.
- [Release notes](https://github.com/hiddify/hiddify-next-core/releases)
- [Commits](hiddify/hiddify-core@f993a57...6c713e8)

---
updated-dependencies:
- dependency-name: libcore
  dependency-type: direct:production
...

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