pygmt.show versions doesn't show GDAL version

pygmt.show versions doesn't show GDAL version: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). Currently, we use the importlib library to obtain the GDAL version, but this only works when the GDAL Python bindings are installed. Six months ago, we updated GMT's dependency…