enable support for lfoss 2025b in EESSI version 2025.06

Author: bedroge

eb_hooks.py

@@ -64,6 +64,7 @@
         {'name': 'foss', 'version': '2024a'},
         {'name': 'foss', 'version': '2025a'},
         {'name': 'foss', 'version': '2025b'},
+        {'name': 'lfoss', 'version': '2025b'},
     ],
 }