Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1009,3 +1009,5 @@
 {"step": 20180, "tokens": 10580131840, "loss": 2.7610193252563477, "tokens_per_second": 976707.4679605602, "lr": 0.0015, "gradient_norm": 0.14246156811714172, "benchmark": false}
 {"step": 20200, "tokens": 10590617600, "loss": 2.740561103820801, "tokens_per_second": 977446.473636771, "lr": 0.0015, "gradient_norm": 0.16009457409381866, "benchmark": false}
 {"step": 20220, "tokens": 10601103360, "loss": 2.720977783203125, "tokens_per_second": 974762.7170033227, "lr": 0.0015, "gradient_norm": 0.20825006067752838, "benchmark": false}
+{"step": 20240, "tokens": 10611589120, "loss": 2.7392934799194335, "tokens_per_second": 986141.0148407788, "lr": 0.0015, "gradient_norm": 0.15124203264713287, "benchmark": false}
+{"step": 20260, "tokens": 10622074880, "loss": 2.7258880615234373, "tokens_per_second": 831364.0932077336, "lr": 0.0015, "gradient_norm": 0.2038249969482422, "benchmark": false}