ci(release): model exclusions (#2448)

Author: wpbonelli

.github/workflows/release.yml

@@ -40,7 +40,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Sync MF6 module
-        run: uv run python -m flopy.mf6.utils.generate_classes --no-backup
+        run: uv run python -m flopy.mf6.utils.generate_classes --no-backup --exclude chf --exclude olf
 
       - name: Update version numbers
         id: version