Bump OpenZgy version to 0.2.968

Type of change

• Bug Fix
• Feature

Does this introduce a change in the core logic?

• [Yes]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• GCP
• IBM

Updates description?

SDAPI and OpenZGY updated to the latest version to avoid issue with Segmentation fault (SDAPI crashes on SDGenericDataset::readBlock).