Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1031,3 +1031,5 @@
 {"step": 20620, "tokens": 10810818560, "loss": 2.7720109939575197, "tokens_per_second": 988054.4007539555, "lr": 0.0015, "gradient_norm": 0.1813291758298874, "benchmark": false}
 {"step": 20640, "tokens": 10821304320, "loss": 2.744840621948242, "tokens_per_second": 983213.2232795581, "lr": 0.0015, "gradient_norm": 0.1516708880662918, "benchmark": false}
 {"step": 20660, "tokens": 10831790080, "loss": 2.751976203918457, "tokens_per_second": 942926.3424132457, "lr": 0.0015, "gradient_norm": 0.14769695699214935, "benchmark": false}
+{"step": 20680, "tokens": 10842275840, "loss": 2.7134735107421877, "tokens_per_second": 987092.7115713909, "lr": 0.0015, "gradient_norm": 0.21292518079280853, "benchmark": false}
+{"step": 20700, "tokens": 10852761600, "loss": 2.712258148193359, "tokens_per_second": 985639.3671655391, "lr": 0.0015, "gradient_norm": 0.14630071818828583, "benchmark": false}