rel/2111.2

This merge request was triggered by a new tag being added to the fsl/possum project.

Accepting this merge request will cause the conda recipe for fsl/possum to be updated to version 2111.2.

If all goes well, a new conda package will built for fsl/possum (2111.2), and will be uploaded to the FSL production conda channel.

(MR automatically generated by fsl-ci-rules running on the fsl/possum repository).