Expose metadata link to next version of the model

This PR adds a metadata field to link this model to a newer version of the same model family: meta-llama/Llama-3.1-8B. This metadata field helps ensure people are using the latest version of your model.

Example of what this looks like:


README.md

@@ -6,6 +6,7 @@ language:
 - en
 tags:
 - vidore
+new_version: vidore/colpali-v1.2 
 datasets:
 - vidore/colpali_train_set
 ---