build(deps): bump soroban-sdk from 26.0.1 to 27.0.2

Bumps [soroban-sdk](https://github.com/stellar/rs-soroban-sdk) from 26.0.1 to 27.0.2.
- [Release notes](https://github.com/stellar/rs-soroban-sdk/releases)
- [Commits](stellar/rs-soroban-sdk@v26.0.1...v27.0.2)

---
updated-dependencies:
- dependency-name: soroban-sdk
  dependency-version: 27.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -8,7 +8,7 @@ license = "MIT"
 repository = "https://github.com/your-org/predictx"
 
 [workspace.dependencies]
-soroban-sdk = "26.0.1"
+soroban-sdk = "27.0.2"
 
 [profile.release]
 opt-level = "z"