Bump deps/zstd from 8689633 to 7fb5347

Bumps [deps/zstd](https://github.com/facebook/zstd) from `8689633` to `7fb5347`.
- [Release notes](https://github.com/facebook/zstd/releases)
- [Commits](facebook/zstd@8689633...7fb5347)

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

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