fix(deps): bump tonlibjson-sys/ton from a1d2d7c to 51baec4

Bumps [tonlibjson-sys/ton](https://github.com/ton-blockchain/ton) from `a1d2d7c` to `51baec4`.
- [Release notes](https://github.com/ton-blockchain/ton/releases)
- [Commits](ton-blockchain/ton@a1d2d7c...51baec4)

---
updated-dependencies:
- dependency-name: tonlibjson-sys/ton
  dependency-type: direct:production
...

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