update meta after new episodes

meta/episodes.jsonl

@@ -10,3 +10,13 @@
 {"episode_index": 9, "tasks": ["Stack lego"], "length": 301}
 {"episode_index": 10, "tasks": ["Stack lego"], "length": 329}
 {"episode_index": 11, "tasks": ["Stack lego"], "length": 350}
+{"episode_index": 12, "tasks": ["Stack lego"], "length": 297}
+{"episode_index": 13, "tasks": ["Stack lego"], "length": 282}
+{"episode_index": 14, "tasks": ["Stack lego"], "length": 313}
+{"episode_index": 15, "tasks": ["Stack lego"], "length": 273}
+{"episode_index": 16, "tasks": ["Stack lego"], "length": 267}
+{"episode_index": 17, "tasks": ["Stack lego"], "length": 320}
+{"episode_index": 18, "tasks": ["Stack lego"], "length": 318}
+{"episode_index": 19, "tasks": ["Stack lego"], "length": 300}
+{"episode_index": 20, "tasks": ["Stack lego"], "length": 334}
+{"episode_index": 21, "tasks": ["Stack lego"], "length": 369}