feat(deps): bump pythnet-sdk from 69e4fee to 78cb03a

Bumps [pythnet-sdk](https://github.com/pyth-network/pyth-crosschain) from `69e4fee` to `78cb03a`.
- [Release notes](https://github.com/pyth-network/pyth-crosschain/releases)
- [Commits](pyth-network/pyth-crosschain@69e4fee...78cb03a)

---
updated-dependencies:
- dependency-name: pythnet-sdk
  dependency-type: direct:production
...

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