fix(deps): bump tonlibjson-sys/ton-testnet from e55c132 to 1a5bbf3

Bumps [tonlibjson-sys/ton-testnet](https://github.com/ton-blockchain/ton) from `e55c132` to `1a5bbf3`.
- [Release notes](https://github.com/ton-blockchain/ton/releases)
- [Commits](ton-blockchain/ton@e55c132...1a5bbf3)

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

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